Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb3bb5fe045cdeb6…

MALICIOUS

PDF

45.7 KB Created: 2020-10-06 11:54:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 4b880a662f4d9171eb255680657a8b93 SHA-1: 540f6bf7354076741eeb4b4a8ddc785c1e5a9ac3 SHA-256: fb3bb5fe045cdeb6b51d8f809b7c72b28339f2e23e03e171a04f6c42ac121573
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=elementary+linear+algebra+with+applications In PDF document text
    • http://files.zenitude-uk.com/uploads/1/3/0/8/130813054/7426879.pdfIn PDF document text
    • http://bobatevaw.stevewelchcreative.com/uploads/1/3/2/6/132680835/kizafubefu.pdfIn PDF document text
    • http://vejis.beanashtangi.com/uploads/1/3/2/6/132696147/169171.pdfIn PDF document text
    • http://files.thepracticalnursepractitioner.com/uploads/1/3/1/4/131483830/75504e49c1e70.pdfIn PDF document text
    • http://files.byleyvillagehallcheshire.co.uk/uploads/1/3/0/8/130814081/fegopobomer-xefisotiximujig-gibekeni-patorawos.pdfIn PDF document text
    • http://files.educationwithhope.com/uploads/1/3/0/9/130969415/fisisupugevenabemir.pdfIn PDF document text
    • http://files.scoilaonghusajnr.com/uploads/1/3/2/7/132740649/naborevoniliru.pdfIn PDF document text
    • http://files.midtownsac.org/uploads/1/3/1/4/131452904/1713109.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://cdn.shopify.com/s/files/1/0492/4512/6812/files/96254199085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3650/6272/files/event_driven_programming.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6502/4416/files/adobe_dreamweaver_2020_crack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/4689/0393/files/3061766205.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8515/2927/files/faxotijefupame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/8049/8334/files/watch_rogue_one_online_free_putlocker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7820/0743/files/pinakipifexevezuxikawexuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0317/4308/files/polaris_snow_plow_for_sale_used.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/0682/2053/files/rubaxarutoxipixoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7041/3207/files/69455609978.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 5

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_off0000670d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x670D 5428 bytes
SHA-256: 9747263ee2cb6567b8c6a3a7c378ab57ff0c5fd6c9899465829e6e101009a13f
font_01_sfnt_off0000795b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x795B 9936 bytes
SHA-256: ab88fe2b46877378c55ec267a364434acb0574e6567a24fe3260f19c9bf656b5
font_02_sfnt_off00009b53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B53 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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