Malicious PDF — malware analysis report

Static analysis result for SHA-256 34f08f856cea90eb…

MALICIOUS

PDF

42.1 KB Created: 2020-08-23 11:05:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9b03a66a295e9b9fb6991b586bec2c1f SHA-1: a8e9d34760b64fc339105aaac8f9fea744377500 SHA-256: 34f08f856cea90eb2e9d0142fa62b67d658388ec8941b1e5b233b52ee4de72dd
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a prominent link with the text 'Cydia app for windows', which redirects to a malicious URL. This URL is part of a link farm, suggesting an attempt to drive traffic to malicious infrastructure. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the PDF structure and embedded links indicate a social engineering lure.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=cydia+app++for+windows In PDF document text
    • http://files.mystgeorgesrugby.com/uploads/1/3/1/3/131379846/39c1944510857.pdfIn PDF document text
    • http://files.tarajartist.com/uploads/1/3/1/4/131453645/5dcae0580f724f.pdfIn PDF document text
    • http://files.slsfnc.com/uploads/1/3/1/4/131408798/kulatel.pdfIn PDF document text
    • http://files.stjohnsmasoncity.org/uploads/1/3/2/7/132740377/9887d.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/1/0435/8910/7869/files/65646007202.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7548/5348/files/35978327852.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9324/5590/files/65693569540.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9055/6568/files/figalaxuxukowafibakija.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2758/6457/files/pavlov_behaviorism_theory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/6341/9547/files/ester_formation_from_carboxylic_acid_and_alcohol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4647/5678/files/guidecraft_kitchen_helper_target.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6826/8456/files/51023576176.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/2557/5581/files/marketing_research_tools_and_techniques.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9665/4489/files/joana_s_leveling_guide_alliance_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2925/8649/files/diet_plan_for_fat_loss.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2656/9633/files/famigetopomabemegaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1760/9122/files/wikabebarawidarigaroda.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_off000067b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67B4 5100 bytes
SHA-256: df53743738799d9c8d7d4700681f6ef1e80d72df8b5376b6564bb19050b8df2c
font_01_sfnt_off00007937.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7937 9976 bytes
SHA-256: 977d8908512902a66885cb7d7d6e2914e44f714744bfbb917c62a71eea3eed59

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