Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d1d194b3800c2de…

MALICIOUS

PDF

128.7 KB Created: 2021-07-24 13:30:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 4543cd229e09a3153bf3451b3931e6a1 SHA-1: ba02f3fec1fc0ca81995a9afa94fc3e9449a3445 SHA-256: 1d1d194b3800c2defc7461b930dd54c39a7c4aef5a2c99a208b539c444ab4058
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external resources, many of which are hosted on compromised websites or disposable domains, indicating a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery. No scripts were extracted, but the structure and URL patterns are indicative of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://eviinstall.com/userfiles/files/68966085133.pdf In PDF document text
    • https://sasalidayanisma.org/uploads/file/tanosatugaxagikune.pdfIn PDF document text
    • http://vaughanreunion.com/clients/7/7c/7cfe0b8ff6d5e3136a6575a9b258a09c/File/46488388658.pdfIn PDF document text
    • https://thesmithgrouphouston.com/wp-content/plugins/super-forms/uploads/php/files/1450b378b971009ab9e982ed018de2a5/30148200077.pdfIn PDF document text
    • http://giustizianuova.it/userfiles/file/nonoguxegavabemabakifawoz.pdfIn PDF document text
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16095365f8ae01---3345001400.pdfIn PDF document text
    • http://mesterek.net/tmp/66623424772.pdfIn PDF document text
    • https://amatnieks.com/pictures/image/zagopigebilib.pdfIn PDF document text
    • https://www.elektrobetrieb-scholz.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607d8e3f251ed---nopezididovakizew.pdfIn PDF document text
    • http://cooperclassof1970.com/clients/9656/File/buzebafuzezelenanasunejiv.pdfIn PDF document text
    • https://www.lightingsolutionsinc.net/wp-content/plugins/super-forms/uploads/php/files/24b282e0f9d202366f020442e778d25b/996973729.pdfIn PDF document text
    • http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e8baf069cdf---23784521149.pdfIn PDF document text
    • http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/krpjlud3b15frkfsobsv852ff1/11285445368.pdfIn PDF document text
    • http://jcon-aps.dk/userfiles/file/tawoweseke.pdfIn PDF document text
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab8c06a673f---jafob.pdfIn PDF document text
    • http://usarsenal.it/userfiles/files/64242202569.pdfIn PDF document text
    • https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/a4686387c11a43912bbdf68138fed0fa/52428251468.pdfIn PDF document text
    • http://www.bordadoindustrial.com/ckfinder/userfiles/files/nozamola.pdfIn PDF document text
    • http://witnesstherealist.com/wp-content/plugins/super-forms/uploads/php/files/8499192fb12dbc53b562e357db1b1485/gejog.pdfIn PDF document text
    • http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e31043eea3---riwadujisitatija.pdfIn PDF document text
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607134c2338a6---67175432757.pdfIn PDF document text
    • http://teacherandtraining.com/coj_u/KK/userfiles/files/bosotixet.pdfIn PDF document text
    • https://hartwellcook.com/wp-content/plugins/super-forms/uploads/php/files/70f75b51c9a336dbcc06374f2399fb62/betefebebim.pdfIn PDF document text
    • http://acecaalcoy.com/userfiles/file/90540255204.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=sims+4+vampire+pack+crackerPDF 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_off0001936f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1936F 18972 bytes
SHA-256: 2dbb969e57eeb60098cb11f1ea69d8193474b06cdabe9aca7b61e9a6179430d8
font_01_sfnt_off0001c4fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C4FC 10480 bytes
SHA-256: 6dd68e41826fc2469d6f9e533bb181845883f89c285b227d1a252767d410075a
font_02_sfnt_off0001dcd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DCD7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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