Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c67ed7812b924f9…

MALICIOUS

PDF

45.0 KB Created: 2020-08-01 01:25:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2a5c4adc6336162c54087dbe5b4623ce SHA-1: 2b251c476e80f2365031a624952af923ca60b805 SHA-256: 3c67ed7812b924f97193fdb739235ddb9b68b75661ed7cba37ad8e5354dfd86d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=official+sat+study+guide+pdf'. This URL is presented within the document body, suggesting a social engineering lure to trick users into downloading further malicious content. The presence of numerous other links, many hosted on Shopify, indicates a link farm designed to improve SEO for malicious content. The ML classifier also strongly flagged this PDF as malicious.

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=official+sat+study+guide+pdf In PDF document text
    • http://files.criteriummarketing.com/uploads/1/3/1/1/131163904/fcefef629d.pdfIn PDF document text
    • http://files.tryhealthypaws.com/uploads/1/3/2/6/132681264/e80fa92.pdfIn PDF document text
    • http://files.laurajoneal.com/uploads/1/3/1/4/131437402/bideseju.pdfIn PDF document text
    • http://files.dmcreativemedia.com/uploads/1/3/1/4/131437873/gulexomox-fadeb-fizokibamu.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/1/0437/0992/3480/files/lipatajimus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0804/0853/files/79721495377.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3355/8168/files/sobuxibiwaxoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4681/3344/files/betilutukugapefesow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7430/4662/files/11752841245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12319118289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20659662050.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1769/1559/files/73620502562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8704/4510/files/78654666238.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/palafasejuzanuz.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 4

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_off00006c93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C93 5356 bytes
SHA-256: 8a6b2177c5171b2ee46ab82efccce49c7394489790dba1b9ba4b6421ba606c63
font_01_sfnt_off00007ef0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EF0 13880 bytes
SHA-256: b07fb7ba6b59a93514957bb39a54ac9ad557a217a6d9fd615a8f75414ef484f2

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