Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e21f560d31d4e8f…

MALICIOUS

PDF

45.6 KB Created: 2020-08-03 07:18:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3d57ed4b281ed13fb7151d1e6efe4aeb SHA-1: f58a3843f52cb3596d515132e9b914c013fe528c SHA-256: 0e21f560d31d4e8fea8aff622feaa9bc1685de1b6eca2413300c3f422d3f46b9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains numerous links, many of which point to redirector infrastructure like 'https://ttraff.ru/pify?keyword=130+u+form'. The document body, though heavily obfuscated, also contains this URL, suggesting a phishing or link-farming scheme. The ML classifier strongly indicated maliciousness, and the presence of redirector links points to an attempt to lead users to malicious sites, likely as part of a spearphishing campaign.

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=130+u+form In PDF document text
    • http://files.jjeffreymesserole.com/uploads/1/3/1/3/131384018/f3faf9c41e.pdfIn PDF document text
    • http://fofipe.sykoralawpc.com/uploads/1/3/0/7/130775904/xavovirifusiba-xixajojelugab-vupifanode-lidekekiz.pdfIn PDF document text
    • http://files.urasenkeurbana.org/uploads/1/3/2/6/132683140/7599387.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/1/0435/0178/1156/files/54782631448.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4954/1013/files/lopuxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5119/6315/files/pasalomigupebugukijur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7846/7222/files/galunixodizipetikideduzo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8115/2152/files/itbs_test_practice_2nd_grade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5928/0022/files/vlc_rip_audio_cd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/viruxirekosarobavogerij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1956/6231/files/69091763511.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2516/2652/files/9965700879.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2859/4336/files/malexibos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3078/9800/files/36865381526.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_off00006cb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CB5 4756 bytes
SHA-256: 85e0d9673a1dfb9514fa39f671f6b5f8559e2b356882ee5f977fedc9e1aab1db
font_01_sfnt_off00007cde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CDE 14660 bytes
SHA-256: 3a72f89c8b24d6ddaafe840b51ce31646c285b5e1ec5a574fbdbe4fa3507f902

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