Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c57af962c2359fb…

MALICIOUS

PDF

66.6 KB Created: 2021-01-26 11:22:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: a753212fd69a34249d134fbca846cfd0 SHA-1: 20753bfd00816b66211d170c6a7d9a1ebf169a2e SHA-256: 6c57af962c2359fb742a9f09319886263ae1524d6ac581a599147e256c51c89b
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external links, many of which are part of an SEO link farm, suggesting a phishing or spamming campaign. One prominent URL, 'https://trafftec.ru/aws?utm_term=chocolate+thai+full+movie', is identified as an SEO redirector. The ClamAV detection and ML classifier further support its malicious nature, indicating it's likely a phishing lure or a downloader for further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7604

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • 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://trafftec.ru/aws?utm_term=chocolate+thai+full+movie PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4371005/normal_60057a3578e5e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496216/normal_5fd387002d364.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489977/normal_5ff30b2b775bd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403820/normal_5ff7879c909e9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448549/normal_5fed960edcf7b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455639/normal_5fda218057795.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368235/normal_5ff1785b68f8f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446645/normal_5fd07c1a73527.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464323/normal_600f51dc36cdc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366665/normal_5ff8b6dcbc3a5.pdfIn PDF document text
    • https://zotawirimatoxo.weebly.com/uploads/1/3/4/0/134096886/8210066.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/widetunipet/mosedapazuwozef.pdfIn PDF document text
    • http://mopezit.epizy.com/aankh_mare_djjohal.pdfIn 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_off0000de71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE71 3840 bytes
SHA-256: c32c38c580c24b1cc0ea00cd40d03e2c135491cfa66c8f4f68acceb36391f3f7
font_01_sfnt_off0000ec43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC43 4812 bytes
SHA-256: 3d79efbb80bec77ddab1b0f307fb5821ee0450b578c0a09e742bbaebdcfa39f2

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