Malicious PDF — malware analysis report

Static analysis result for SHA-256 347cad778b53fcc3…

MALICIOUS

PDF

43.0 KB Created: 2020-08-03 21:39:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2efa5288a79ee0caf5dd1201df69177d SHA-1: 5050cf52f3037b313400e081e9004d8c4cfcb1e7 SHA-256: 347cad778b53fcc37a4cff362127b1451eb5f6877ff19a8acc9fe110c1bbf735
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one identified as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though partially corrupted, contains text related to 'occupational diseases' and the URLs suggest a link farm or SEO spam tactic, likely to lure users to malicious content or phishing sites.

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=list+of+occupational+diseases+pdf In PDF document text
    • http://files.emanuellutherandaycare.com/uploads/1/3/0/7/130775413/4266282.pdfIn PDF document text
    • http://files.leadersoflanier.com/uploads/1/3/0/7/130739375/3705428.pdfIn PDF document text
    • http://files.newwestminsterchristadelphian.org/uploads/1/3/1/3/131397987/5573998.pdfIn PDF document text
    • http://files.saborlatinotacuari.com/uploads/1/3/1/4/131452963/3221194359be79.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/1/0438/2805/2130/files/clear_twitter_likes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1052/2279/files/tutorial_powerpivot_excel_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9599/9129/files/dixanitametoremafumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4248/8998/files/fesulitatewepupiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0213/3671/files/2004_toyota_solara_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1570/8580/files/65585899054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7831/1326/files/reader_rabbit_1st_grade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/23784397966.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6979/2668/files/20845349407.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/1/0437/0153/4875/files/96493437560.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8088/4119/files/43806206132.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_off00006b65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B65 4992 bytes
SHA-256: 74c4b03ea292df7c35edbc83cd4d8c97d6a845d17669d0d20b4df15d59b48d65
font_01_sfnt_off00007c7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C7E 10120 bytes
SHA-256: 56c6c64d7aefaf4fff8e6b4f8db21e883b946e7a6920e0a5fbe091613221f689

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