Malicious PDF — malware analysis report

Static analysis result for SHA-256 05b2b1f717f36e2c…

MALICIOUS

PDF

43.5 KB Created: 2020-08-10 20:59:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 901a91298636b5865c3335171f52b833 SHA-1: ab7abc21d7806626a408edb2be73601c53c00a40 SHA-256: 05b2b1f717f36e2ccc63490dd0628df8341e2caa32cb0b9604606131c468de10
194 Risk Score

Malware Insights

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

The PDF file contains multiple heuristics indicating malicious redirector links and an SEO link farm, suggesting a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains a URL that points to a redirector, which in turn likely leads to the distribution of further malicious content. The ML classifier also strongly indicated maliciousness.

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=domain+driven+design+eric+evans+pdf+portugues+download In PDF document text
    • http://files.lknailsandbeauty.co.uk/uploads/1/3/2/6/132681938/wovaxale.pdfIn PDF document text
    • http://files.objectsofdesireuk.com/uploads/1/3/1/8/131871614/jovewozisiduw_pofejewuruvipub_bexekaz.pdfIn PDF document text
    • http://files.buffalobabybums.com/uploads/1/3/1/8/131871518/pepudolafajiduf.pdfIn PDF document text
    • http://files.geordie-genes.co.uk/uploads/1/3/1/6/131637365/d6ad24626fc0.pdfIn PDF document text
    • http://files.adurdendm.com/uploads/1/3/2/6/132696104/ragamimosizetolojum.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/1/0433/9387/6118/files/surunotiwetapokarozu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6754/7552/files/dinamani_news_paper_today_in_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2601/2567/files/1994_chevy_silverado_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3298/4222/files/ropimunife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8918/3398/files/52534073631.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5570/9341/files/angielski_sownik_tematyczny.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1470/9663/files/38516690067.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5187/5481/files/english_cebuano_dictionary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3683/5993/files/ccent_practice_exam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0763/1783/files/badminton_court_size_in_cm.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1863/3894/files/best_reader_windows_xp.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tugogesobiwem.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 8

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_off00006869.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6869 5628 bytes
SHA-256: bd40bd3d47c3406ae625344a35178a9e546326b1d26445a66a46ae5b1453056d
font_01_sfnt_off00007b84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B84 11164 bytes
SHA-256: 715020f4304c94d73e7e3a7d32c48177e066a1f05e0b3aaa7ad69a0c02c47df9

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