Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7252eadf73fdc27…

MALICIOUS

PDF

44.5 KB Created: 2020-08-05 06:58:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0058839ce6566a445f1888005f6562cc SHA-1: 392835dcf0e9a58a524eaf931aedebcd31b47190 SHA-256: c7252eadf73fdc27b9e28c756d80e8612dec9082d18dd060aa6d6dcb1e137583
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a document about 'stainless steel material'. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates the primary URL leads to malicious infrastructure. The PDF_SEO_LINK_FARM heuristic suggests the document is part of a larger scheme to generate traffic through numerous external links, many hosted on Shopify. The ML classifier strongly supports the malicious nature of this PDF.

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/wb?keyword=stainless%20steel%20material%20pdf In PDF document text
    • http://files.thesmalldetails.ca/uploads/1/3/1/6/131606289/65eaa4dd574319.pdfIn PDF document text
    • http://files.mrllab.org/uploads/1/3/2/7/132740277/ee897.pdfIn PDF document text
    • http://files.jiucle.org/uploads/1/3/0/8/130814232/nanomugirup.pdfIn PDF document text
    • http://files.northeasternwomensrugby.com/uploads/1/3/1/4/131454791/butewelimodeg-resolab.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/1/0435/8812/4829/files/66070874062.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8573/9685/files/git_delete_a_commit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2757/0596/files/57223371551.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/zenuvatelenik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xoxolesusoziviro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3803/8426/files/payment_of_gratuity_act_1972_in_marathi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4937/0268/files/17870058332.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8960/0414/files/chez_nous_student_activities_manual_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/1217/3463/files/free_english_grammar_test_with_answers.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_off00007024.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7024 5292 bytes
SHA-256: ff98a2cbda195fa3638ebcaa61deaaf6d6ecd3f750d91ed10a6172700a4fe38d
font_01_sfnt_off00008209.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8209 10352 bytes
SHA-256: 0f9f3831b5189660decf55cb2e9babac5f2c5ce2a4ecde360032118a9471f085

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