Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab7482cb706cd939…

MALICIOUS

PDF

46.1 KB Created: 2020-09-18 03:48:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 044b7d2cb405f07c7c8dcb6cef62e10f SHA-1: c7023197f82aef7b0e1b510a21f4e055e25aa645 SHA-256: ab7482cb706cd939c0506d6deb3aeeeef9c0917177687f735bb338ee1ff5651a
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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.link/wix?keyword=beats+by+dr.+dre+powerbeats2+wired+earbuds+%2528black%2529 In PDF document text
    • http://zexipuz.jencolby.com/uploads/1/3/2/6/132695384/8191049.pdfIn PDF document text
    • http://files.ndhumanities.com/uploads/1/3/1/4/131453496/kevalal-sexiduxaxizim.pdfIn PDF document text
    • http://vavum.lakewoodpca.net/uploads/1/3/1/3/131381806/9430726.pdfIn PDF document text
    • http://files.aimeetayagphotography.com/uploads/1/3/1/4/131438265/eb40f35f0c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://4fa376c0-c735-435a-a9e1-748ef1957130.filesusr.com/ugd/89602e_c7aa735d2bdb4c9d9dae62120143dad8.pdf?index=trueIn PDF document text
    • https://7e3df5b6-a0e7-44cc-9871-2bc2f41f2342.filesusr.com/ugd/9cb927_6061747bdd1f4098948f39be2771514d.pdf?index=trueIn PDF document text
    • https://25a09224-193a-40af-8a3f-a06733b348aa.filesusr.com/ugd/7cefa9_6e2effa382d445b1b73937cceeeb5143.pdf?index=trueIn PDF document text
    • https://dc8adda1-09f5-41f3-9da8-b78d0e00da89.filesusr.com/ugd/921909_2c9053f2d9ff4a149b0b51bc0f8fa91d.pdf?index=trueIn PDF document text
    • https://f352ddb7-c9c1-49a0-a735-0d27db769d77.filesusr.com/ugd/418e76_eed51bc7a5574c15a947d7550e0ad0db.pdf?index=trueIn PDF document text
    • https://862d9ea6-da9d-4b4f-b3c3-073cfa5ad218.filesusr.com/ugd/1da05d_459bf41471b244619047416c4985e454.pdf?index=trueIn PDF document text
    • https://94961202-1850-441c-a648-75f5c80de307.filesusr.com/ugd/c83fdb_9f6c980d0e364668bb8480675d499da5.pdf?index=trueIn PDF document text
    • https://a0137ee8-0c67-488a-a64f-cb29fd2968c7.filesusr.com/ugd/e32576_458ac878016f446086616fa2596598fe.pdf?index=trueIn PDF document text
    • https://ac8a8050-721f-481f-b34d-17f24a8f3ed2.filesusr.com/ugd/cb4a18_a338c6dd36044320ab0d3b05ab3cbcd6.pdf?index=trueIn PDF document text
    • https://97f02879-40c9-4d58-829a-1ebcdd9dc9a2.filesusr.com/ugd/74147a_237829790e0c4f808da189ca2dafafe8.pdf?index=trueIn PDF document text
    • https://8e123279-95e8-4d23-833f-5463e37b9687.filesusr.com/ugd/c63dba_3c282949d12b41d58233da4767ad02e4.pdf?index=trueIn PDF document text
    • https://688c2856-cc23-41ae-88bd-90a8158447c5.filesusr.com/ugd/98d33d_d7f2d3e4394044ceabb9b6d8e885d2ce.pdf?index=trueIn 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_off0000713c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x713C 5832 bytes
SHA-256: 9aed3e4c77739e727d8e87018d370cd6de833d148c79bf2723f958be22cf0ab4
font_01_sfnt_off00008552.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8552 11224 bytes
SHA-256: 972340335268075f7aed5de0067afc25ecaf57e11f7d5ec12fe0355b8bdcf807

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