Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2b864d77fe5f0c…

MALICIOUS

PDF

46.9 KB Created: 2020-10-03 11:55:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 38ada0d40d3904b84137a658a79a84d5 SHA-1: 199a17a6cac893b0a28f3b2de882ca629ce355fd SHA-256: af2b864d77fe5f0c167ac057f80ae420b64e56a4204b61a6c22374c8890415a4
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://cctraff.ru/strik?keyword=beeman+p17+repair+manual In PDF document text
    • http://files.woodhullgenealogy.com/uploads/1/3/0/8/130874416/zojevakovalazu_tigetaz_gibatanuse_tolajitejeku.pdfIn PDF document text
    • http://boneg.kevspickled.com/uploads/1/3/2/6/132680903/wifivakirarewu_fodivelil_razowobijatumu.pdfIn PDF document text
    • http://files.championpunditacademy.com/uploads/1/3/1/3/131383581/7845437.pdfIn PDF document text
    • http://files.alligatoralliance.com/uploads/1/3/0/7/130775536/f20f36ae.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/0e705af3-517e-4f7b-84a9-f4f7d2898f82/lipewezotilovexasikir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d68f93f-2f48-4c26-b9bc-9747535bd6cc/65922868561.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ba4c9da-6343-43a2-b770-6a92fc8c9468/nobodetubijuro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85a2529e-3834-4402-838a-ea69333c1a88/nuwagusasiwowumadafososo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cbe43f1d-9522-4de3-8590-0f72cb442d38/13174631100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/7001/6673/files/fifawawatuxolavipofa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9486/8122/files/jesekoxoxazizekudikegazu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/5976/0289/files/epanet_user_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9721/7440/files/45729014830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/4920/1058/files/98414497716.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/5152/0678/files/how_to_build_a_t_rex_motorcycle_frame.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 3

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_off00006e30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E30 4660 bytes
SHA-256: 4c8d1f1c385c780dfce7d11ebf80276acb1cab3beed6b76e8535796344713587
font_01_sfnt_off00007ddf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DDF 10240 bytes
SHA-256: 4e0ca972ea6522ee36ae769ac0d23b2312555e56df6a358ff0a4ca48ce55ea9b
font_02_sfnt_off0000a09e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA09E 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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