Malicious PDF — malware analysis report

Static analysis result for SHA-256 867e379ccf56cb32…

MALICIOUS

PDF

69.0 KB Created: 2020-12-27 11:34:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: c695dc0bf332c559abf4c47e5ee69467 SHA-1: e6b1b6f703e801fa2175d7eb3a34a69af23d266b SHA-256: 867e379ccf56cb32bf8f5c1467c1f9862e286587077da6e167dcd597acc7f86e
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external links, including a prominent one to 'trafficel.ru' with a UTM parameter suggesting a 'coaster frenzy full version apk free' lure, indicative of a phishing or software scam. The PDF also leverages SEO tactics with a link farm, aiming to attract users through search engines for potentially unwanted downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://trafficel.ru/strik?utm_term=coaster+frenzy+full+version+apk+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403561/normal_5f990d78a3ddd.pdfIn PDF document text
    • https://giximanuv.weebly.com/uploads/1/3/4/5/134526051/4809ddc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366350/normal_5f87a7b002b0f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369142/normal_5fafa67942a29.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385415/normal_5fe38fe0d8634.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bezutu/solosurasikatibowanag.pdfIn PDF document text
    • https://s3.amazonaws.com/gogonof/inorganic_chemistry_shriver_atkins.pdfIn PDF document text
    • https://s3.amazonaws.com/gajakelegeza/central_serous_retinopathy_referral_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/85250286794.pdfIn PDF document text
    • https://s3.amazonaws.com/kefefetafij/movasivoworofululosal.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/android_broadcast_receiver_service_communication.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/49168591871.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/abcd_malayalam_movie_bgm_music.pdfIn PDF document text
    • https://s3.amazonaws.com/tobaziw/employee_evaluation_template.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/take_it_easy_guitar_chords.pdfIn PDF document text
    • https://s3.amazonaws.com/sabobenuwe/fikiwonuximopiwaxi.pdfIn PDF document text
    • https://s3.amazonaws.com/sirasu/42043371033.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://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cfe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFE2 5076 bytes
SHA-256: cd61c0928873fd26172ad499023752b563da9c56108d9b1684b3cd6b757d15a2
font_01_sfnt_off0000e14e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE14E 11072 bytes
SHA-256: a0eaa0a04bc799b794ce2df7b0f83911dbeb143c2c0edf2af78233963d5b5781

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