Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4e722e32a8551eb…

MALICIOUS

PDF

51.5 KB Created: 2020-08-15 06:45:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cff24b84163b61e996a382985f4122a9 SHA-1: a05c87c49b498479a71ebce7eb6964b40618d46d SHA-256: a4e722e32a8551ebaab38d48a18e88c6a4f76efce4e87b049edf346acb1c820d
234 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing campaign. The document body, though heavily obfuscated, contains text related to a game download and a malicious URL. The presence of a password-protected archive lure heuristic indicates an attempt to bypass security scanning by encrypting the actual payload.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=avatar+pc+game++highly+compressed In PDF document text
    • http://lefaw.ericaldama.com/uploads/1/3/0/9/130969959/wasirozuvinobugiran.pdfIn PDF document text
    • http://gidogu.erikahanneson.com/uploads/1/3/0/8/130874493/fokidapokifilam-biver-giripufawaxe.pdfIn PDF document text
    • http://files.healingneck.com/uploads/1/3/1/8/131871605/boloku.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6405/6225/files/77583985254.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4386/2181/files/tedigedezevoxojakabu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1695/1704/files/mathematics_for_economists_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4887/6702/files/974973739.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/29665946213.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3260/0985/files/fowirat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0276/4184/files/rekes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3494/3388/files/74970818468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4801/8855/files/28871027367.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3844/8548/files/47763615095.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48466687054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8996/9820/files/1617107561.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7098/8196/files/beduganulota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1179/1257/files/tavegikajokotenisafipobov.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 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007cc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CC3 5320 bytes
SHA-256: dbf287a5e637d6ab9d643afc7c478aada7d035cf14af17e73ceefe4758aa0269
font_01_sfnt_off00008ee0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EE0 10548 bytes
SHA-256: cf33d954b411e7efc24c4a2756a2c0a5ae3344b8818943e5db07428355a79570
font_02_sfnt_off0000b2d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2D2 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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