Malicious PDF — malware analysis report

Static analysis result for SHA-256 21148399f0fa4da0…

MALICIOUS

PDF

55.4 KB Created: 2020-08-14 06:03:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ff1a1a7e27f371c0a971921d5e4379b7 SHA-1: c6edf8aa50b0622de1b647a2e4728095a2b9468b SHA-256: 21148399f0fa4da0b1112979250d1237282b2bfc175003d2cd441e9a17563275
194 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a malicious redirector and part of a link farm. The embedded URL 'https://ttraff.cc/pify?keyword=intralinks+annual+report' is a known malicious redirector. The document body, though heavily obfuscated, contains text that suggests a lure related to an 'Intralinks annual report'. The primary attack vector appears to be directing users to malicious infrastructure.

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=intralinks+annual+report In PDF document text
    • http://files.mmakhaolak.com/uploads/1/3/1/6/131606861/vawopigiwow.pdfIn PDF document text
    • http://files.elizabethtreadwell.com/uploads/1/3/0/7/130740443/fasagufuzel-jagazot-xakezowa-dejopumof.pdfIn PDF document text
    • http://files.leterbark.com/uploads/1/3/1/8/131856358/mavogufonopot-sofujeno-tunodubapebo-mozatixije.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/1/0435/1921/3727/files/likelipimuxamuwegof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5077/8275/files/zuzubowufitukeforetadef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8131/1132/files/70959138304.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8799/3763/files/pdf_world_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3477/1610/files/bewurij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8837/0072/files/5021550867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4506/9724/files/focas_1500c_bilge_alarm_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/2481/3977/files/john_deere_240_skid_steer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/ujt_characteristics_and_relaxation_oscillator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3006/0955/files/21744735268.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/1911/2345/files/fire_accident_investigation_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7935/1968/files/modified_ashworth_scale.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 5

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_off00008c4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C4E 4816 bytes
SHA-256: 13ea579b145e9c80607611fc2d9f9f3d580ef91947164079ce7303733793702f
font_01_sfnt_off00009caf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CAF 16492 bytes
SHA-256: 4fff9287d4fe42cf4adf3ca5a9eef36afa9376d82a4c2ab16be23c665a4e7829

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