Malicious PDF — malware analysis report

Static analysis result for SHA-256 83223c49012f9912…

MALICIOUS

PDF

42.7 KB Created: 2020-08-20 11:56:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 035ed93986f680979929cd908efcc6eb SHA-1: f0cb9422c38d942be3de08170d8620384174e7c2 SHA-256: 83223c49012f99124a043cdced2d1658e8bbbf8efe68081225aaf81fb2b3a6b5
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing lure. The document body, though heavily obfuscated, contains a URL that appears to be a lure for downloading games, likely a pretext for malware delivery. The ML classifier strongly indicates maliciousness, and the presence of redirector links reinforces the malicious intent.

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.cc/pify?keyword=rockstar+games+list+for+pc+free In PDF document text
    • http://birevosib.traumayellow.com/uploads/1/3/1/4/131408100/bbdb21ea552e24.pdfIn PDF document text
    • http://degakuz.projectgust.org/uploads/1/3/0/8/130874575/f202c.pdfIn PDF document text
    • http://files.lotusliondesign.com/uploads/1/3/1/4/131407530/6797100.pdfIn PDF document text
    • http://files.chesterfieldelementarypta.com/uploads/1/3/1/3/131379540/likoforevit.pdfIn PDF document text
    • http://files.morrowtimes.com/uploads/1/3/1/8/131872198/691ab46971.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/1/0434/6901/3158/files/blood_strike_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9309/8660/files/bazeniwalege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/talikog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8945/9368/files/61862894598.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8125/0469/files/ben_10_reboot_game_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0768/0405/files/vozosekakusegimup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5319/5165/files/hex_code_for_white.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5150/7112/files/6329254794.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/arabic_personal_pronouns.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/4159/0170/files/cambridge_primary_english_learner_s_book.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_off0000674d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x674D 5408 bytes
SHA-256: 41f3f7d2ef1ae0a2ed27e4a8ae3dc90e945773b8c651ff3d56a3e2adce8c188a
font_01_sfnt_off000079a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79A1 10680 bytes
SHA-256: 0bc8456562587956dc5919b551320cb91ad44c136e8a7a58b6c661f3161845d8

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