Malicious PDF — malware analysis report

Static analysis result for SHA-256 676a35837f7ce66e…

MALICIOUS

PDF

53.6 KB Created: 2020-08-04 07:12:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ae7313d88f90e5d468426ec0cba0d0e2 SHA-1: 2de931e884382591ca3ceea3266b6f1b944a7d1a SHA-256: 676a35837f7ce66eac1fa38e48241be2cf5eb8d49568f47bd4085e73d6d496b0
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious domain, identified as a redirector for phishing and SEO link farms. The document body, though heavily obfuscated, contains text suggesting a lure related to a 'performance appraisal form'. The presence of numerous external PDF links further supports the SEO link farm heuristic, indicating an attempt to drive traffic to malicious sites.

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=completed+performance+appraisal+form+pdf In PDF document text
    • http://files.westhavencarshow.com/uploads/1/3/0/8/130874213/kizakogese.pdfIn PDF document text
    • http://files.thebrickva.com/uploads/1/3/0/7/130739835/luropedapipipisa.pdfIn PDF document text
    • http://labovo.shodhsandhan.net/uploads/1/3/0/8/130874085/xutoriveg_zuroxodapowu_jalif.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/1/0438/4312/5405/files/rifumuvugete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6673/7311/files/bumuvusofi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7246/3772/files/46157695649.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8283/2280/files/60721695691.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8085/2383/files/example_storing_strings_in_eeprom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6117/2631/files/75525374572.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5249/1159/files/43218265281.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3467/9208/files/synonyms_vocabulary_word_list_for_ielts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3122/2677/files/eichmann_in_jerusalem_summary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9622/0572/files/3049276095.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2561/3468/files/vomajowoseduwupunutiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8669/0969/files/tudakito.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 6

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_off000094ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94BA 5208 bytes
SHA-256: 9ab4502f9eab18c350a83c8df1d572707ba7d589f56446ca0a4e77e92d35cbe0
font_01_sfnt_off0000a64f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA64F 10272 bytes
SHA-256: 10b69031e1853b09cc770487dc7531eaaae3768d9d15ed1fb7117ece3cec9906

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