Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fc78082b26891aa…

MALICIOUS

PDF

50.3 KB Created: 2020-08-01 00:14:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5ff44a901b1c5bac9329bbb25fde1244 SHA-1: a32cc65207e85845037e12731ca0704b40c673a2 SHA-256: 3fc78082b26891aa62da072d6abc909466bd4be6d0a491cf33e0e82c6c381416
194 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to its structure, which includes a large number of external links. One critical heuristic firing indicates a PDF redirector link to 'https://ttraff.ru/pify?keyword=1-+page+meta', suggesting a malicious redirection attempt. Another critical firing highlights a PDF SEO link farm, with 'https://cdn.shopify.com/s/files/1/0433/8394/7427/files/saruzoka.pdf' being one of the many embedded links. The document body contains garbled text along with these URLs, reinforcing the idea that the document's primary purpose is to host 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.
  • 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.
  • 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=1-+page+meta In PDF document text
    • http://files.carlyle-consulting.us/uploads/1/3/0/7/130740026/1031746.pdfIn PDF document text
    • http://files.fastblueprints.com/uploads/1/3/0/9/130969489/tokuvel-putegoxa-wutinovuzazazaw.pdfIn PDF document text
    • http://files.ikkarpublishing.com/uploads/1/3/0/7/130738970/1667986.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/1/0433/8394/7427/files/saruzoka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/98393636846.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0381/2773/files/vibotelazeto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4655/2227/files/39368989119.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1559/4399/files/nusoxawikokupoloxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72518400380.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1760/9122/files/91162048105.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9054/2753/files/6423028096.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34456372212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7252/0352/files/letopetudusexuve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6241/7825/files/xegoditavazakifivinib.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007ba1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BA1 4348 bytes
SHA-256: c5a5c35588519a83cdd5900b32500f521c707d30316594c758e92c27bc9d87b2
font_01_sfnt_off00008a6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A6C 10708 bytes
SHA-256: fe4c4d4792e8f4e0b0c6bb98673a18e3c579fae694539a30d40e9dc7da2d85e4
font_02_sfnt_off0000aeca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAECA 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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