Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bf9a3cb7833a855…

MALICIOUS

PDF

39.2 KB Created: 2020-08-10 06:23:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6f125ef36b7a564a774415cd20c81997 SHA-1: 9fe577141ad3621c5da9ffc1c6a7420d01af2732 SHA-256: 3bf9a3cb7833a8556ee090db534ecc6624611b48617858844a3ed49b3e119847
194 Risk Score

Malware Insights

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

The PDF document contains multiple embedded links, with a primary link pointing to a known malicious redirector. The document body, though heavily obfuscated, includes the text 'Alan moore watchmen pdf download' and a URL that matches the malicious redirector, suggesting a lure to trick users into downloading potentially harmful content. The presence of a link farm heuristic further indicates a malicious intent to distribute links.

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=alan+moore+watchmen+pdf+download In PDF document text
    • http://zosajaze.meanscenecomics.com/uploads/1/3/1/3/131381464/4183c.pdfIn PDF document text
    • http://wukoli.susiero.com/uploads/1/3/0/7/130775169/6376249.pdfIn PDF document text
    • http://files.zamboangueno.com/uploads/1/3/0/8/130874317/sopofud_xuworigafesevul.pdfIn PDF document text
    • http://files.loweslandscapingservices.com/uploads/1/3/1/3/131382680/lesofamurev.pdfIn PDF document text
    • http://files.makwawamalawi.com/uploads/1/3/2/7/132740860/zuder.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/1/0432/3550/8387/files/81578149451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2908/5859/files/birthing_plan_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5687/1062/files/vatavafuladimijoxaziv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/69651331918.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7386/2808/files/81609985122.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4933/7500/files/70074949636.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7901/6360/files/kilusisoxejo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/32090216956.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4146/2174/files/oxford_handbook_of_clinical_hematology_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2577/6288/files/temple_of_avo_fable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4372/4186/files/nesibifepotukegobokemub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6971/8182/files/rubepisalitatuw.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_off00005a28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A28 5300 bytes
SHA-256: 80932b7c541a924e6316c7c5cb6ed1154e5712ad9669302e1ae7aa4289fc0646
font_01_sfnt_off00006c18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C18 10480 bytes
SHA-256: 942fd0fac72efb7ef216a12153e73bd8204e10f9f425a508f006fcc1c20b3cec

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