Malicious PDF — malware analysis report

Static analysis result for SHA-256 102dca224e1233db…

MALICIOUS

PDF

88.1 KB Created: 2021-08-04 23:43:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 69516e23e7f15c7e9d75b44d9b595bdd SHA-1: 24e6cd66868e0c4ac75cdae7fa9c8d1f585674ae SHA-256: 102dca224e1233dbfc5a17d1bac17d8c7dd94dc5565d32b8c7fe607e8602945f
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and ML classifiers indicated a high probability of maliciousness. Numerous heuristics indicate the document functions as a link farm, directing users to various external websites, some hosted on potentially compromised CMS uploads or disposable domains. The embedded URLs suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9905

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://auto-spec.ca/fck/file/44627987114.pdf In PDF document text
    • http://anhuizhkj.com/upload_fck/file/2021-5-12/20210512115145117797.pdfIn PDF document text
    • http://benrassam.com/uploads/files/viromevuzijuxopube.pdfIn PDF document text
    • http://rjt1.org/upload/files/wimunukedaxeko.pdfIn PDF document text
    • https://bawaniint.com/ckfinder/userfiles/files/kujupifogetoduk.pdfIn PDF document text
    • http://tanriovermensucat.com/uploads/genel/files/fumajenusuvez.pdfIn PDF document text
    • https://keluargamimpi.com/contents//files/22381621690.pdfIn PDF document text
    • https://rhythmcprandfirstaid.com/wp-content/plugins/super-forms/uploads/php/files/4ba41cffa7de86386603b17cc2f2582e/polikasebatusiluxolebo.pdfIn PDF document text
    • http://dissanna.com/temp/fckeditor/file/tokazedevuguvajik.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609626a13b729---tadexorilasaz.pdfPDF link annotation
    • http://martom24.pl/martom/userfiles/file/38212164284.pdfIn PDF document text
    • http://forter.vn/hinhanh/file/nizepuvuvuditob.pdfIn PDF document text
    • https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/46e6cdab63c43bde722043cf896dc3e4/23364084098.pdfIn PDF document text
    • https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d590ea92f9---nugafasedaja.pdfIn PDF document text
    • https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ce23cbaa3d6---12633448822.pdfIn PDF document text
    • https://notofthisgalaxy.com/wp-content/plugins/super-forms/uploads/php/files/pj111h2limilgegar79nkm1s0f/bavogajosodanoz.pdfIn PDF document text
    • http://prestinoequitacion.com/imagenes/upload/files/zeratalebutefipol.pdfIn PDF document text
    • https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/356b002803e24a842825590b940e1f81/11816583851.pdfIn PDF document text
    • http://diagonal.org.ar/wp-content/plugins/formcraft/file-upload/server/content/files/1609ed15ca7c89---9064076114.pdfIn PDF document text
    • https://www.studioline.ie/ckfinder/userfiles/files/28497406614.pdfIn PDF document text
    • https://nezrenpin.com/calisma2/files/uploads/10882602630.pdfIn PDF document text
    • https://saam.vn/images/content/file/46068795013.pdfIn PDF document text
    • http://saipanbooking.com/FileData/ckfinder/files/20210717_B1BBC10B977A7E31.pdfIn PDF document text
    • https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16090edb92747c---96428611599.pdfIn PDF document text
    • http://studiorumeo.it/userfiles/files/kalezezowuborovolovovel.pdfIn PDF document text
    • http://primethailand.com/ckfinder/userfiles/files/dageridusopifesajuxonowi.pdfIn PDF document text
    • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/1607350135f098---jugelo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=roblox+gift+card+generator+codePDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0A3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000108b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108B5 18872 bytes
SHA-256: e1c0fff00ef0375a109a04a4bdf6380d0342f4e26f7d699235963e24c076010f
font_02_sfnt_off000139ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x139CA 10768 bytes
SHA-256: 5a166294a50f70c7a9fa5f00ace605cc43acbe092feb022f76bb9b9620d68c14

Open this report in the interactive analyzer, or submit your own file for analysis.