Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cc33a00c660c1ff…

MALICIOUS

PDF

83.8 KB Created: 2021-09-03 19:23:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 70456282b203804fa302184e854230ab SHA-1: a7811b731bec7a872aa3b669bdebe9c5f5eef6a5 SHA-256: 3cc33a00c660c1ffb953fb592e1fc42483858c0b3f06743e5a1f48c1e7742d97
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains numerous external URIs and link farm patterns, directing users to compromised CMS upload storage and disposable hosting. The primary function appears to be acting as a lure to redirect users to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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 https://allytemp.ru/uplcv?utm_term=types+of+drugs+in+south+africa+pdf PDF link annotation
    • https://emauto.lv/index/images/up/file/vozogafaxupofafumixukemi.pdfIn PDF document text
    • http://villaturri.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607f05172abaa---govefolurisowakizuramexo.pdfIn PDF document text
    • http://lncxjzxxw.com/upload_fck/file/2021-5-24/20210524170854995996.pdfIn PDF document text
    • https://proff-doors.ru/wp-content/plugins/super-forms/uploads/php/files/tmp/duvefawuverulexirukewuxos.pdfIn PDF document text
    • http://kco.su/userfiles/file/22056101117.pdfIn PDF document text
    • http://www.ambredore.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bb6ece36a0---radinuvarijegekexoga.pdfIn PDF document text
    • http://blpest.com/UserFiles/file/dovevasugevofegapebibav.pdfIn PDF document text
    • https://signika.pl/Upload/file/81299927977.pdfIn PDF document text
    • https://myphi.biz/nbloom/fckuploads/file/zunosanenok.pdfIn PDF document text
    • http://placc.info/up_image/pebos.pdfIn PDF document text
    • https://indiantiffin4me.com/nbloom/fckuploads/file/41380408099.pdfIn PDF document text
    • http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160e4c181c7ad5---juburorimidefagiruvedamu.pdfIn PDF document text
    • https://cullinanconstruction.com/wp-content/plugins/super-forms/uploads/php/files/ta0v2dr1vghooq8rlfvi1ed8rq/16589689231.pdfIn PDF document text
    • http://ychnjl.net/userfiles/files/99987730564.pdfIn PDF document text
    • https://charterfori.ir/basefile/charterforiir/files/megalejorazilixixixoruwa.pdfIn PDF document text
    • https://wickedcheesy.com/images/file/54155370440.pdfIn PDF document text
    • https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b08b53d171f---19810521368.pdfIn PDF document text
    • http://www.masozilina.sk/ckfinder/userfiles/files/gefirodijo.pdfIn PDF document text
    • https://anninhsieuthi.online/upload/files/80021639964.pdfIn PDF document text
    • https://www.prowallpanama.com/wp-content/plugins/super-forms/uploads/php/files/c7264e1fc65a62ca171578a3da920264/91272535644.pdfIn PDF document text
    • https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c623227afaa---tozozukevewib.pdfIn PDF document text
    • http://endustriyelkiralama.com/wp-content/plugins/super-forms/uploads/php/files/l20usepugnqsft7mp3bi5fm6uh/veleweterunanupuwunez.pdfIn PDF document text
    • 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_off0000e11a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE11A 11028 bytes
SHA-256: d1665a1540ffd117af6f2fda62ea249ac7b227f0066f3f1a6b741f3122dd1160
font_01_sfnt_off0000fa8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA8C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001129e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1129E 18156 bytes
SHA-256: ce36eac2ffff39f74d38a1848df369dada239a3b1ff67b2c02e64d65a4da5fee

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