Malicious PDF — malware analysis report

Static analysis result for SHA-256 86d9c31f72c4b285…

MALICIOUS

PDF

43.9 KB Created: 2020-08-20 08:23:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7158d22c70088b80499cd35c0b0362ab SHA-1: 2a2a1ed6956da806a38d491c1e8c48fa41ce0461 SHA-256: 86d9c31f72c4b285cec67e78b7c8eb5c40b175870a0f0f39c78d6d5b44cdcef3
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to 'roof inspection report template free' and the malicious URL. The presence of multiple links to external PDFs, including one on a known redirector, suggests an attempt to drive traffic to malicious infrastructure, likely for phishing or malware delivery.

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=roof+inspection+report+template+free In PDF document text
    • http://files.thedailyamg.com/uploads/1/3/1/4/131454620/957933.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/1/0433/0687/7080/files/tulajemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2843/8440/files/resume_letter_samples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3786/7687/files/bending_machine_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4976/3487/files/on_college_letterhead_bonafide_certificate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5744/6038/files/wisobijudidomiru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8116/3157/files/40279598533.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5956/0094/files/nutamem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8124/4577/files/rerufonikoxinoxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5174/5431/files/xemejofinapunutep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9626/7168/files/milokatasojemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/50537202024.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 2

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_off00006bb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BB9 5168 bytes
SHA-256: 940b968c41f8b6f38e3bd04ff968b5c3a319e616543144905429fff917863a4b
font_01_sfnt_off00007d38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D38 11788 bytes
SHA-256: 4bc3893247f492efcfc80ceffe1a7138fe11c8f02df5dc30ceeef4ca89dc0701

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