Malicious PDF — malware analysis report

Static analysis result for SHA-256 65bd31d581ae5ff3…

MALICIOUS

PDF

48.6 KB Created: 2020-09-19 14:29:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7fb161ce603a99b9c2e3e08fd4139854 SHA-1: e9b38ac11f6727c4a7f069c793837852bffa3c2a SHA-256: 65bd31d581ae5ff39a58ca30a5022242784bc9df4fb803fd9090149f7ee405f1
194 Risk Score

Malware Insights

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

The PDF contains embedded URLs that redirect to malicious infrastructure, specifically identified as a redirector for a "free-download phishing" campaign. The document body, though heavily obfuscated, contains text that appears to be a lure for the malicious link. The presence of multiple PDF links and a critical heuristic firing for malicious redirector links strongly indicates a phishing attempt.

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=barron%2527s+act+36+pdf In PDF document text
    • http://zorosamoj.snowhillmodeltrains.com/uploads/1/3/1/6/131637814/duseretunikepip_dizuselubodose.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://8e0b6408-89e3-4ad3-bc3f-e1829492f2aa.filesusr.com/ugd/7b00a0_3e659c6a33a9481c9f58a680a4e52b68.pdf?index=trueIn PDF document text
    • https://e5f7d3e0-9d33-46e2-a5eb-5cefcb1dcc2f.filesusr.com/ugd/02ccf7_8c96290728ee4b1aa552229d2c1c6449.pdf?index=trueIn PDF document text
    • https://a31ce0a0-34cd-4e48-a1ff-93b11a6e9063.filesusr.com/ugd/5899d5_01ee614d0bbb4f56a80ade28fe6ec46d.pdf?index=trueIn PDF document text
    • https://05927199-e7d6-489d-bccf-0edaae9632c4.filesusr.com/ugd/bae0a0_9184f60aeed1409fab17eefee704f66b.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7542/7735/files/3848018289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/0588/7900/files/dieta_1200_calorias_diarias_menu_sem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7950/7870/files/adventure_time_season_9_episode_7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6413/9669/files/38263557466.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6083/6005/files/new_wave_cooker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3587/5745/files/46677259871.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000072cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72CD 5140 bytes
SHA-256: dea7b8d75eb90fc6b308e79eb2e6dd3d5d7ed8512d20756894e31b41739d20c4
font_01_sfnt_off00008440.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8440 10344 bytes
SHA-256: 1e688ba1a6d4d467376e7c59d174c4d5cdcf0f839d822a3de15c5a68c07214db
font_02_sfnt_off0000a7b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7B3 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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