Malicious PDF — malware analysis report

Static analysis result for SHA-256 864b82a8f4e5d812…

MALICIOUS

PDF

72.0 KB Created: 2020-10-04 19:13:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 2eeecaa71369d89d564cb0d7ca03bf47 SHA-1: 54cda21d71448bc0cefb583cc007c732eee4f3a5 SHA-256: 864b82a8f4e5d8122ce9e1df4ab9633482028608c615e1a3d7831e840c0a7295
194 Risk Score

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://ggtraff.ru/strik?keyword=what+is+liberation+theology+pdf In PDF document text
    • https://site-1039215.mozfiles.com/files/1039215/xugusoti.pdfIn PDF document text
    • https://site-1037274.mozfiles.com/files/1037274/64378336619.pdfIn PDF document text
    • https://site-1043043.mozfiles.com/files/1043043/gokuruxodorubakawes.pdfIn PDF document text
    • http://files.virgietovar.com/uploads/1/3/1/0/131071262/88fe47c12e11e1.pdfIn PDF document text
    • http://files.earthspirithearth.com/uploads/1/3/2/6/132682819/4570787.pdfIn PDF document text
    • http://zalili.handsonpottery.org/uploads/1/3/0/7/130739893/5819968.pdfIn PDF document text
    • http://xotuvon.vadoseorchid.com/uploads/1/3/2/7/132740478/6989c538cc6.pdfIn PDF document text
    • http://rumegolo.montanabridalshows.com/uploads/1/3/1/6/131636727/9938076.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/1/0430/8526/7097/files/melipakivevi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4430/7098/files/naming_ionic_compounds_polyatomic_ions_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6790/6975/files/best_crossbow_tinkers_construct_project_ozone_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3863/8241/files/red_heart_team_spirit_yarn_-_red_white__blue.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db194a02-a47c-4e94-9e77-8bfc5e89fac1/86437562606.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6f81b2b-c270-43dd-a6fa-e782a4fae255/xusesitagawazaxumo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2988a22-3b27-437d-95c5-e557cd40f0d2/87326777806.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97572c40-a834-4e9b-b80c-e96eb81d5474/konamusoxozirafirurato.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_off0000dc95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC95 5556 bytes
SHA-256: f0112cc29f198a1279504f62b69f15c645a56e83e3b9789cf7a852d6c47e0ac3
font_01_sfnt_off0000ef82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF82 10368 bytes
SHA-256: 04bf4cd0cb3dde19353d4e79d35340f32de3d74dc180b8bc7106e8d1082b5883

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