Malicious PDF — malware analysis report

Static analysis result for SHA-256 844c17a62eb9a0eb…

MALICIOUS

PDF

44.6 KB Created: 2020-09-16 17:41:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c04a770bc0fd5e387b7b49589e9244b8 SHA-1: f74d14708a0d11ec1664d1a8a6ae820fb3bc3e93 SHA-256: 844c17a62eb9a0eb8dae42ae1973070ef1bc1ccf62de20b834434f13f1443d8e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external sites, including a known malicious redirector. The primary lure appears to be a 'free dating sites' theme, which is a common phishing tactic. The ML classifier strongly indicated maliciousness, and the presence of a redirector URL confirms the intent to lead the user to potentially harmful content.

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.me/wix?keyword=free+dating+sites+in+usa+and+canada+without+payment In PDF document text
    • http://maveresuz.cornerstonecowboychurch.org/uploads/1/3/0/7/130738765/vopovumadawamaf.pdfIn PDF document text
    • http://files.cofhhe.org/uploads/1/3/0/8/130814861/2040862.pdfIn PDF document text
    • http://files.metropolitanperformingarts.org/uploads/1/3/0/9/130969712/e1fd4bff4.pdfIn PDF document text
    • http://files.artesanfruit.com/uploads/1/3/0/8/130814346/gapafigabeponu.pdfIn PDF document text
    • http://files.theturquoisepalms.com/uploads/1/3/0/7/130776291/771643.pdfIn PDF document text
    • http://rajasa.cestarifreshlamb.com/uploads/1/3/1/3/131398134/7852980.pdfIn PDF document text
    • http://nezudizif.andyhartsphotography.com/uploads/1/3/1/4/131408027/5baf5e35a9.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/jomanumono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7739/3815/files/arcade_fire_ep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/tafovovebivebosekelimenet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3034/7938/files/treatise_on_invertebrate_paleontology_bivalvia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6596/6754/files/92374035917.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/cara_pengendalian_gulma_bayam_duri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/69474661204.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_off00006db1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB1 5604 bytes
SHA-256: f820e72229d02a50ff89c27dea525df0f32ac7087db9d3b7be9746d5556258fd
font_01_sfnt_off000080b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80B5 10752 bytes
SHA-256: 7b28ab707c4111ec9454e64444a5fd6cf6fae39cdeed4079789b0c84ab39a6d5

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