Malicious PDF — malware analysis report

Static analysis result for SHA-256 d40a63fbb43c6436…

MALICIOUS

PDF

37.6 KB Created: 2020-08-14 14:14:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8861948af5fbdac3ff041a62c5fad1aa SHA-1: af0bd8fd5eb0ffdce3bf74771aa20c55ce66462d SHA-256: d40a63fbb43c6436474c8e61c778597b4fed3d62431da620a22627f78cd220ca
162 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO spam and phishing. One critical heuristic identified a link to a known malicious redirector, specifically 'https://ttraff.ru/pify?keyword=bluetooth+driver++intel', which is presented as a lure for a 'Bluetooth driver'. The document body, though heavily obfuscated, also contains this URL and other benign-looking PDF links hosted on Shopify. The primary attack vector appears to be directing users to malicious infrastructure via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=bluetooth+driver++intel In PDF document text
    • http://files.melbphotography.ca/uploads/1/3/0/7/130776063/rarozatorotipo.pdfIn PDF document text
    • http://files.acssdownload.com/uploads/1/3/0/7/130739308/bakinike.pdfIn PDF document text
    • http://files.susanbrumfieldmusic.com/uploads/1/3/1/4/131482958/zemegobimisog.pdfIn PDF document text
    • http://files.chanble.com/uploads/1/3/1/4/131453024/lasirum-fojidoderek-dejijifupisig-wavuko.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2449/8343/files/dmv_ny_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7355/1001/files/i_spit_on_your_grave_torrent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1631/3242/files/xenenumamelebovewewatesax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0046/1474/files/40969835583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6416/3490/files/elegy_in_d_bottesini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rirolor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0486/9277/files/jozubitaxijiwilegududixiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7929/4358/files/84405392292.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5011/4978/files/93537021512.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1340/5850/files/90449968706.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/40948382406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7945/0272/files/aflatoksin_nedir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5035/3318/files/83572678973.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 7

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_off00004fde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FDE 4632 bytes
SHA-256: fce4cfef0226e78691c3bcd38f9923a94c5ac5cb3844687f573e8abc5a149ab7
font_01_sfnt_off00005f9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F9C 13036 bytes
SHA-256: 05a6001a241cbfbc7483cc20e9eed0052c8aaeb5230ed6e7ca83f69ae7407158

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