Malicious PDF — malware analysis report

Static analysis result for SHA-256 a88704eba2e15c19…

MALICIOUS

PDF

53.8 KB Created: 2020-08-12 02:10:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8f841be59be3e5a0f9500df48bc5c497 SHA-1: f170363e6d3a018475dedb3ff81df1e96bc0b681 SHA-256: a88704eba2e15c19a3e572c1225083f87e4e48b5fea62291f18ebbce7c00564f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains a link that redirects to a malicious URL, disguised with a keyword relevant to job applications. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the link leads to known malicious infrastructure. The PDF_SEO_LINK_FARM heuristic indicates the document is part of a larger link farm, likely for SEO manipulation or to distribute malicious content. The embedded URL is part of this redirection scheme.

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=application+letter+for+teaching+vacancy+pdf In PDF document text
    • http://files.photoscopestudios.com/uploads/1/3/2/7/132740536/f21d525e3.pdfIn PDF document text
    • http://files.christlutheransoldotna.org/uploads/1/3/1/4/131453456/fulukunosubuwe.pdfIn PDF document text
    • http://dosulu.strawberrymooncounselling.com/uploads/1/3/0/8/130814328/mojaxavijiwavi.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/1/0437/6992/1688/files/ravobud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7235/4459/files/20990036111.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2566/1095/files/nifenajize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2161/5775/files/vekekowepirumowesitesej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0587/8170/files/belisako.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tufajotojitumawudawemir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4222/6854/files/46070592211.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7095/5424/files/bavinck_our_reasonable_faith.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5687/1062/files/48103276918.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1241/3851/files/42797001714.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7764/0092/files/29342251062.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4497/6278/files/gezokagunojanorisesug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6278/8245/files/68740923403.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4610/0374/files/types_of_public_policy_models.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_off00009474.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9474 5388 bytes
SHA-256: 33c5bdc6a8d829528ba98efc653763f4b0c8875d430fea25f98f574a1a1dd45f
font_01_sfnt_off0000a6c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6C5 10192 bytes
SHA-256: 02347de9b12a5af86fd1de979429da2514a4a8242c5a787766ed7ee07901c2cc

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