Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f5f26c180da47cf…

MALICIOUS

PDF

59.1 KB Created: 2020-10-16 19:20:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0f8dc9839e6adefa8a3d7cf4601936fa SHA-1: 74b4f8e1aeca30c200d0971575256e63ea0881ba SHA-256: 0f5f26c180da47cff5ddbcabc675e351fe8e8d9e48bce4c8d478497d99d06029
192 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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.club/123?keyword=hbl+internship+report+2020+pdf In PDF document text
    • https://zimiduninu.weebly.com/uploads/1/3/1/6/131637103/9402018.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/e5bcd2697.pdfIn PDF document text
    • https://dotofinadi.weebly.com/uploads/1/3/0/7/130740455/fbbc8e9c.pdfIn PDF document text
    • https://pepotoxuxomupav.weebly.com/uploads/1/3/1/4/131483830/xejoxiz.pdfIn PDF document text
    • https://tejigenunonim.weebly.com/uploads/1/3/0/8/130813632/0e7825e7c8476.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369487/normal_5f87ec5674352.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/lukuxaluk.pdfIn PDF document text
    • https://jumuwubugunitus.weebly.com/uploads/1/3/1/0/131070493/4baad.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/3157557.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/godekux.pdfIn PDF document text
    • https://kupugaxome.weebly.com/uploads/1/3/0/9/130969415/8800606.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/1/0499/9652/9819/files/58394558841.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/1447/3886/files/tunirogemofamipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/5272/7972/files/star_wars_battlefront_renegade_squadron_ps_vita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2342/3912/files/jazol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6377/0781/files/combination_gun_safe_academy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc6b443c-7ae4-497f-9091-929c2d3553a2/60287802932.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca1ab818-5c2b-41d1-984b-bf4d51358ea7/57845604022.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f105c4a-cdbc-423b-8593-d4948c363ce6/34056048333.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ffdfeb6-bdb7-41e6-bf44-12bc9e771978/vanumorokefataviji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a45dc629-1732-4512-8f3c-b6d4c8f4bef6/53800922492.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a938.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA938 5296 bytes
SHA-256: 3a88a05b67f02eec7ad0ef6300bf33e6cb83c9df7552a791313f351c4b7fa09b
font_01_sfnt_off0000bb2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB2C 10468 bytes
SHA-256: 7e5414672270c30368415bc835026b84959abba78cc34ff2f841c4a69916a2b7

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