Malicious PDF — malware analysis report

Static analysis result for SHA-256 16a3bc1d02aa0b98…

MALICIOUS

PDF

40.1 KB Created: 2020-08-23 04:57:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b0881e7436743785d5ad164c412ef8a9 SHA-1: e35dfef5f02d56784e38cd50ef3f1f42af2c5099 SHA-256: 16a3bc1d02aa0b983ebb5c448975e6cdaed0e50225b8ac04ceb3031827ef862d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to malicious infrastructure, specifically a URL associated with SEO spam and phishing lures. The document body itself contains a lure related to an "annual report" and includes the malicious redirector URL. The presence of numerous external PDF links further suggests an attempt to manipulate search engine results for malicious purposes. No scripts were extracted from this sample.

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=zurich+life+insurance+company+annual+report In PDF document text
    • http://files.highschoolcareercounsellor.ca/uploads/1/3/1/4/131409794/maxuvedibafofin.pdfIn PDF document text
    • http://files.amuseartfair.com/uploads/1/3/1/3/131380625/657b2.pdfIn PDF document text
    • http://files.ninigretpartners.com/uploads/1/3/1/8/131871433/rodivugaxinizir-belaralonivet-roveripozelu.pdfIn PDF document text
    • http://xipovoti.lqblackpool.co.uk/uploads/1/3/1/3/131380349/xemovaxixami_puvitukefe_ramifopoji_fomobamaki.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/1/0434/5295/6838/files/82153545570.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3233/6792/files/motorcycle_camping_checklist.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6539/0757/files/autodesk_3ds_max_2017_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/48177964882.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/5231/0184/files/difonepuxefixita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43106273748.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0985/9999/files/jezuwovukabopajopiwepu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/pl_sql_developer_format_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/2923/6634/files/historia_de_los_caballeros_templarios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4179/1895/files/safexovuxunizojaxev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12247178291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5484/0485/files/monawagitiseregupubekuma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6623/6834/files/36945208782.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 6

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_off00006013.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6013 5316 bytes
SHA-256: d1027055194b9b7700b08451c44a1f2b1fca0499e1a961c8caac307ae8846ddc
font_01_sfnt_off00007209.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7209 9768 bytes
SHA-256: aba604aa111a5a475c50e3b64e4b19701fe368283b4ff4151760b88d0a7f18bd

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