Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d864c476ae9d9c6…

MALICIOUS

PDF

47.9 KB Created: 2020-08-03 08:47:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f887229307fd096e8e4b1025ee2a9c6b SHA-1: e1fd0f28ec66ebb8e680d6eaad5660d2ef3af07d SHA-256: 3d864c476ae9d9c679e23fe08ae5cf913ceed21d0e9b29a3e7a49426d16e7a9b
214 Risk Score

Malware Insights

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

The PDF document contains a mass of external links, including a critical redirector link to 'ttraff.ru', suggesting a phishing or scam campaign. The document body, though heavily obfuscated, contains text related to 'Questar gas rebate', aligning with the callback phishing lure heuristic. The primary intent appears to be directing users to malicious or deceptive websites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://ttraff.ru/pify?keyword=questar+gas+rebate In PDF document text
    • http://files.kapnordicskiers.com/uploads/1/3/2/6/132681452/de8eff15f53ab89.pdfIn PDF document text
    • http://tuvuje.gameworldparty.com/uploads/1/3/1/4/131408024/9172385.pdfIn PDF document text
    • http://files.uusouthsuffolk.org/uploads/1/3/1/4/131437508/dejokoziwo.pdfIn PDF document text
    • http://files.heirloomtattoo.com/uploads/1/3/0/7/130774993/gejov.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3325/6345/files/35995680818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7931/1253/files/8445347991.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9008/1960/files/eye_roll_text.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5030/2616/files/buwulojubu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7274/9721/files/49337385490.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0537/0787/files/boxoranogadopika.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5326/0701/files/40170451732.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9087/0423/files/sikamubezov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7808/0919/files/83235786091.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8127/7342/files/ruluzadunovunazufizeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rakapadanixip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8721/7319/files/salesosinokidemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7526/4924/files/62752434237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8637/2246/files/natefe.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66A7 4640 bytes
SHA-256: df77df649157dc52b1bf074949faada8262bccbf70647ab7c66221c86051a685
font_01_sfnt_off00007680.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7680 14696 bytes
SHA-256: b51974c3c3cc140b685c4e9b142501952ed1822f83d3de2fab7d861f04987f82
font_02_sfnt_off0000a4cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4CD 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176