Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ea94b0e5ec6fb3d…

MALICIOUS

PDF

39.2 KB Created: 2020-08-05 03:01:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 11e5fda7ab1c196c64593c5b2df9ddd6 SHA-1: c5b395637df068d5e6f9eba48e70ac83a91ec6bd SHA-256: 4ea94b0e5ec6fb3d069bb9bdf8d222bc11497d3b210250c790274ea37036cda3
202 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download button, which is a common lure for phishing attacks. The PDF also functions as a link farm, directing users to numerous other PDFs, likely to obscure the malicious intent. The primary malicious URL identified is ttraff.ru, which redirects to a page related to 'past modals for possibility and probability exercises pdf'.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=past+modals+for+possibility+and+probability+exercises+pdf In PDF document text
    • http://bodod.wonderfuljourneytravel.voyagerwebsites.com/uploads/1/3/2/6/132695278/wexabunofinop.pdfIn PDF document text
    • http://files.efhstsa.org/uploads/1/3/1/4/131406412/kekavug.pdfIn PDF document text
    • http://divikoki.jlizjewelrynmore.com/uploads/1/3/1/6/131637136/nixujideruv.pdfIn PDF document text
    • http://files.pirumanors.com/uploads/1/3/1/6/131637043/felow.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/1/0435/1629/7368/files/xalutigilosewodij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6189/5587/files/36748276836.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7972/8281/files/fozosumiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1687/1333/files/lebomegatitibotuxorupi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3438/5303/files/pedazilupedidito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vemuvuferakodumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7391/9393/files/99117761030.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8271/9136/files/5260131087.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8713/4882/files/banksy_biografia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2897/0652/files/bafemora.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0577/7832/files/nububojozejokogujebi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0776/9750/files/mulurar.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 3

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_off000059cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59CD 5612 bytes
SHA-256: 0cc6cfb0d2aed3ac073519b786452e47d2dd558e249d88eff9c6e993c66e0304
font_01_sfnt_off00006cd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD6 10292 bytes
SHA-256: 2e7156995413728b93359405ce31ee4dfffe6c78ce686b514d494a79bfffca0d

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