Malicious PDF — malware analysis report

Static analysis result for SHA-256 b031cbf5cdc5da35…

MALICIOUS

PDF

38.8 KB Created: 2020-09-19 05:24:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e9aa31824afd0f8dc4f7772fcec3855f SHA-1: 9eb50c84e0c7ebf1986b7bc347765c9bcf01b099 SHA-256: b031cbf5cdc5da358573d483ef7ea0352bac65ba73d4b6c3475f3430ce9570f4
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a donation request, which is a common social engineering tactic. The ML classifier strongly indicates maliciousness. The document body and embedded artifacts are obfuscated, but the primary malicious action is the redirection to the known malicious URL.

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.me/wix?keyword=schaumburg+boomers+donation+request In PDF document text
    • http://files.brunstaneproductions.co.uk/uploads/1/3/1/3/131384777/8954a0fd8.pdfIn PDF document text
    • http://files.chirpworkshop.com/uploads/1/3/1/4/131406075/ripiburobodekegux.pdfIn PDF document text
    • http://files.pearlywhitespediatricdentistry.com/uploads/1/3/2/7/132741397/wezewitofo.pdfIn PDF document text
    • http://pivawi.hcvnonline.com/uploads/1/3/1/4/131409090/6132f5f7876a7c.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/1/0428/5290/9212/files/pontiac_sunfire_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9875/8567/files/pokusunewixinenozapalat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6544/1445/files/iced_chai_tea_latte_nutrition_information.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0233/9232/files/zuwawewod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5488/1175/files/tiwatesorolugotuxagewo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9231/1206/files/sabavoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4259/5239/files/xekapagozosuberekonodiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6054/3138/files/cdp_peripheral_ring_road_bangalore_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9564/5589/files/cazadores_de_microbios_libro_completo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1617/5263/files/redijedupumukom.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 7

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_off00005821.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5821 5692 bytes
SHA-256: 9b45a2df1b4d1e29890d2328cbd8ae13943203edcd11f8a2f7408fdded85a400
font_01_sfnt_off00006b40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B40 10216 bytes
SHA-256: b61ff30db5362d064a1746ba2920dd9592c0a1fa939eadd4418ba27862d7d2f7

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