Malicious PDF — malware analysis report

Static analysis result for SHA-256 85b2e9832f94fa64…

MALICIOUS

PDF

65.2 KB Created: 2020-08-09 13:57:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 570923630b96ab742ea487ddc0961d01 SHA-1: 632a320df230eda175087ce9a1b3edc8a4e51786 SHA-256: 85b2e9832f94fa6458a17bf40f3301c247aa28ce7d4d60ffe545d06522bcad25
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links designed to appear as legitimate documents, but they redirect to a malicious domain. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' indicate a phishing or scam attempt using SEO tactics to distribute malicious links. The ML classifier strongly supports the malicious verdict.

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.cc/pify?keyword=discrete+joint+probability+distribution+pdf In PDF document text
    • http://files.nepalpeacehome.org/uploads/1/3/0/7/130739646/wajupok-biwev-dinerixoxorede-nudodaje.pdfIn PDF document text
    • http://nezudizif.andyhartsphotography.com/uploads/1/3/1/4/131408027/5baf5e35a9.pdfIn PDF document text
    • http://files.wakefieldconcertband.org/uploads/1/3/1/3/131384589/4391416.pdfIn PDF document text
    • http://momogepod.tllafleur.com/uploads/1/3/1/0/131070872/e2a8a.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/1/0432/5546/4104/files/bowelojanejogikepuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/37473884149.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4170/8453/files/49788392821.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6605/7116/files/28136093745.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4380/5594/files/18325249800.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2584/1819/files/gokajegukuzuseluvigafaxef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vewurobafug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5450/5885/files/33142040442.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1952/3480/files/fevoso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9956/9829/files/52111581193.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4576/3744/files/4396684523.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009d24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D24 5464 bytes
SHA-256: d89778ff56f462e2c37ff31ad43722da4bd4c3c94dcb311f23866a1f8417b70e
font_01_sfnt_off0000afd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFD3 15856 bytes
SHA-256: d5ee530bf668a09671b4a89705d550f1049afafb1ae967536c161a60af69c92b
font_02_sfnt_off0000e163.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE163 16268 bytes
SHA-256: 6bb993e87b9852463968c8bb1ab4a1189a2ca4776bc641e7ec3cf47ea4d574f4

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