Malicious PDF — malware analysis report

Static analysis result for SHA-256 9102a73926c4a1b6…

MALICIOUS

PDF

82.1 KB Created: 2020-08-06 20:29:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 63e8aa05c27cf9b688dca0b834003391 SHA-1: ae72fd24f1be08d2a21da38d107f1788d49d7894 SHA-256: 9102a73926c4a1b60d00978e960cd4f7c4e15a191a08eee3765cb2f81ec39d3c
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be the primary lure. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious redirector.

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=factors+affecting+buying+behaviour+pdf In PDF document text
    • http://files.justincayd.com/uploads/1/3/0/8/130814601/500ba635ded.pdfIn PDF document text
    • http://files.provisopartners.com/uploads/1/3/2/8/132814342/c89b827ccd21.pdfIn PDF document text
    • http://files.swatarachurchofgod.org/uploads/1/3/2/6/132681409/559358.pdfIn PDF document text
    • http://files.gipilates.com/uploads/1/3/0/8/130814714/382ba.pdfIn PDF document text
    • http://files.orangevalleycreations.com/uploads/1/3/1/3/131383510/bujofaketuwomidabej.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/1/0433/6304/1430/files/motakiboz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8649/6415/files/ge_common_documentation_library.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6482/6783/files/49005223840.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1143/8752/files/taresiviruwaxewubawi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9261/5073/files/71050701992.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4417/5013/files/kezuxulun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0459/1271/files/vodiroxazi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1481/5901/files/bamunuxowen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0016/8607/files/93615079292.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7352/8213/files/miwokikiguxojejegemonas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0699/9203/files/test_your_vocabulary_advanced.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5676/6882/files/merigafetime.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_off000103a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103A6 5644 bytes
SHA-256: c177d7aea145ab7c32d5f63f9670e4ff6463d55cf6cfa377af40c15465eddbb7
font_01_sfnt_off000116db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116DB 10828 bytes
SHA-256: 6e8756a49d7a7ea5c2924d4f1707d906d81d1515166330057f72baf133f6a9e8

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