Malicious PDF — malware analysis report

Static analysis result for SHA-256 812a33cdaa359477…

MALICIOUS

PDF

56.0 KB Created: 2020-08-04 17:35:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2594ba81e9e43d4a72da81f577d1243e SHA-1: 5650216b7657a178700989d3257dd41bcb087424 SHA-256: 812a33cdaa35947778aa3535e7dcee93887803bd39b3a5ae2792e6f8afe6a4ce
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector infrastructure associated with malicious activity. The document body and embedded links suggest a lure for users interested in 'ethical hacking' to download further content, likely leading to a malicious payload. The presence of multiple PDF links and a redirector URL indicates a phishing attempt to drive traffic to malicious 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.com/pify?keyword=ethical+hacking+course+syllabus+pdf In PDF document text
    • http://bibox.uintapreparations.com/uploads/1/3/1/6/131637649/fc6e4.pdfIn PDF document text
    • http://files.westsoundsportswear.com/uploads/1/3/1/6/131606630/tenizurovazuk.pdfIn PDF document text
    • http://files.wingspan-wellness.com/uploads/1/3/1/1/131164046/jatesodinimejel.pdfIn PDF document text
    • http://files.voidedpixels.com/uploads/1/3/0/7/130775182/dovibufewudewo_mekolojipomizil.pdfIn PDF document text
    • http://files.oldtel.com/uploads/1/3/0/7/130740530/a335356e3966e71.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/1/0435/5627/4339/files/39596878082.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1867/3566/files/70017244597.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4276/5991/files/kekifefuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6439/2866/files/54920835118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8447/9641/files/spectrum_detroit_diesel_generator_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65105912314.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9112/4643/files/woxazi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0285/3538/files/75143143865.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/45173592655.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_off00009b46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B46 5680 bytes
SHA-256: aedabc0bde48a4b155c60ea2b015a785bb3d62d716e930c4c7868254a32e8eae
font_01_sfnt_off0000aea2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEA2 10620 bytes
SHA-256: 30a2c32a16c9b587c7b267efc2d73ab85c2aabdafcdcdbc8b98c3ff023563ac8

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