Malicious PDF — malware analysis report

Static analysis result for SHA-256 a210314bb8a13741…

MALICIOUS

PDF

41.9 KB Created: 2020-08-18 14:50:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 778c8d3bbb5518a6e52a7d952e29014e SHA-1: 1e9af871be48b5980c9a91ae3b063c19c740e7be SHA-256: a210314bb8a137418429421788be7a8e18e1d25f77f68773640907817285b003
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which point to a redirector service. The primary link, 'https://ttraff.cc/pify?keyword=free+after+effect+slideshow+template', is a known malicious redirector. This suggests the document is designed to lead users to malicious content, likely for phishing or malware distribution. No scripts were extracted, and the document body is heavily obfuscated, but the link farm heuristic and the malicious redirector firing strongly indicate a lure-based attack pattern.

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.cc/pify?keyword=free+after+effect+slideshow+template In PDF document text
    • http://zizuko.hansonhoneybee.com/uploads/1/3/1/4/131438610/dajujuwabim.pdfIn PDF document text
    • http://gemezunik.so365compliance.com/uploads/1/3/1/3/131384771/9e19bc7.pdfIn PDF document text
    • http://files.fencingaberdeen.com/uploads/1/3/1/3/131378774/ludoginarunow.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/1/0440/4042/1541/files/concerning_hobbits_tin_whistle_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1975/3879/files/ishares_core_us_reit_etf_fact_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4490/4865/files/trigonometry_by_lial_10th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1824/8601/files/31326838118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1336/6182/files/jagaje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5850/3584/files/pan_card_date_of_birth_proof_affidavit_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dosoxuwananeworatimuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1687/1333/files/97457314137.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 1

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_off00006000.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6000 5440 bytes
SHA-256: 44a9fc60fa8e21a997411d903a28557e9035f407a44a771cb80171beccb56fab
font_01_sfnt_off0000726c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x726C 12892 bytes
SHA-256: 2276c8a38e33cfb6d3634fd03fe71729c38d47b633a409dcf20eb9f3851aa557

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