Malicious PDF — malware analysis report

Static analysis result for SHA-256 07bd12ffb4bfa0a4…

MALICIOUS

PDF

45.5 KB Created: 2020-09-22 17:41:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 02f24239d500555741372125d510d63e SHA-1: e634f4d65003e792362f4c7d469c321516a9d6cd SHA-256: 07bd12ffb4bfa0a48e5e39f9f893c415da11ed45ac4dc55d43e7c6845d47f7a0
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though obfuscated, contains a URL that appears to be the primary lure. The ML classifier strongly indicates maliciousness, and the presence of a link farm suggests an attempt to manipulate search engine results for broader distribution.

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/wb?keyword=stanley%20cohen%20moral%20panic%20definition In PDF document text
    • http://rewazu.talkingtomyselfie.com/uploads/1/3/1/1/131164250/kazepufat_sularaxipajiv_vunasejikoxidi_kerusimunopavu.pdfIn PDF document text
    • http://fuwif.magicrepair.net/uploads/1/3/1/4/131407089/675228fee4a8e4.pdfIn PDF document text
    • http://files.samndoesart.co.uk/uploads/1/3/1/3/131398197/e6d212.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/1/0433/0822/0574/files/7501172047.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8429/9936/files/autocad_architecture_2019_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5119/5299/files/9471218697.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1843/5229/files/converting_celsius_to_fahrenheit_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/2739/0615/files/jolelisabijevijoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9140/1627/files/marvel_vs_dc_game_ps3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8910/7869/files/64375645163.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6231/9517/files/zudavosujoxag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9181/0717/files/36941865402.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/9373/1744/files/ancient_greek_homes_building_materials.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5702/9019/files/16071751678.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 4

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_off000073ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73EC 5424 bytes
SHA-256: a5d6ecf71685f46029df26024b609c47329cfa9270e49ed0c5bddf4a10578e09
font_01_sfnt_off00008639.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8639 10240 bytes
SHA-256: b457deb7c34f5470b327ab686fbc7c1af3175716160a2a436c93b73093be4c7b

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