Malicious PDF — malware analysis report

Static analysis result for SHA-256 95f06d231540e335…

MALICIOUS

PDF

41.6 KB Created: 2020-09-30 05:33:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 2659416bfe0967f2f9c2f5073f4931c9 SHA-1: 173b581f3bd8d431a84ff4c8947f191572c9e3b4 SHA-256: 95f06d231540e33541a61bc9d5bc2c432ff2f6044c28f9b98688e1fadd867b90
214 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://cctraff.ru/strik?keyword=rf+power+amplifier+design+pdf In PDF document text
    • https://site-1036939.mozfiles.com/files/1036939/35762987778.pdfIn PDF document text
    • https://site-1037251.mozfiles.com/files/1037251/97475080506.pdfIn PDF document text
    • https://site-1036898.mozfiles.com/files/1036898/79774347834.pdfIn PDF document text
    • https://site-1036696.mozfiles.com/files/1036696/wabupibomure.pdfIn PDF document text
    • https://site-1036879.mozfiles.com/files/1036879/34366609275.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/96db99e1-d3fa-445e-bc2c-20c257edb0be/27735424351.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6704a45-9abb-4611-90fa-7a97f4fdee02/rapozalejuzowitobuda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62c971dc-3878-4e25-bfac-6f97683a88e4/gebulovujomowel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77ac7169-bc87-4ffc-9c0d-04896c5aa87b/vekaku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/edc054f7-fae0-4e8e-9b63-dae8a99a3485/27029182694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0242/9593/files/gopowagivafexaba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3845/7508/files/92742487087.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9880/7202/files/22725451674.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8520/8483/files/merlin_season_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f0c6712-f6fe-4d4e-a852-344dcdf6e288/85588101770.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75397c77-4b67-48b9-a4b4-d7fbb6f302a1/nowalawalolagujegoguremem.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_off00006433.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6433 5460 bytes
SHA-256: 1179882a45673ead34daf17798c705fd77fb7ccfc223afbfe1d15df1120fb6b1
font_01_sfnt_off000076cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76CB 10272 bytes
SHA-256: 48b68d0d1e74c8e8b025dd268c0007a7f8a65f50fd918b7704e491240f458010

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