Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b2e09af6f442ec6…

MALICIOUS

PDF

44.1 KB Created: 2020-11-01 11:38:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 6be3a8152c219afcc81cbac81bf18298 SHA-1: 813851e15ff0d2cb2849b50dc0f42df643440efc SHA-256: 9b2e09af6f442ec665496275d37cbd2bbfe809874cb8c6c67169d2312d34882a
204 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a significant number of embedded URLs pointing to link farms hosted on disposable domains, indicating a likely SEO manipulation or phishing campaign. The presence of a malicious redirector link further supports this, suggesting the document's primary purpose is to drive traffic to malicious sites. No scripts were extracted, but the structure and embedded URLs strongly suggest a malicious intent.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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/123?keyword=royal+aloha+resort+lake+tahoe In PDF document text
    • https://bituxusod.weebly.com/uploads/1/3/4/3/134347303/6049003.pdfIn PDF document text
    • https://mabudorowux.weebly.com/uploads/1/3/4/4/134458492/1202778.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371010/normal_5f88bc1d57af0.pdfIn PDF document text
    • https://duxixujojive.weebly.com/uploads/1/3/0/7/130739103/bemelexojixan-xakijojasoped-timir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367625/normal_5f8c1c3d31936.pdfIn PDF document text
    • https://sakukavazu.weebly.com/uploads/1/3/1/3/131379729/sezoxel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387562/normal_5f9a70584479b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416131/normal_5f9a63f604c46.pdfIn PDF document text
    • https://wilunozuwi.weebly.com/uploads/1/3/4/4/134432110/5182771.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/1/0480/8340/2909/files/adverb_ly_words.pdfIn PDF document text
    • https://s3.amazonaws.com/peveziwoguxuzam/first_national_bank_granbury_377.pdfIn PDF document text
    • https://s3.amazonaws.com/suzeduselu/8750898209.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_off00006ab2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB2 4944 bytes
SHA-256: b01f10e22f3f52d65301716a483d1cc804977d0b4157055f41be5e811d043bc2
font_01_sfnt_off00007b7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B7F 12212 bytes
SHA-256: 7e61ec020830dcdb8ea3d32a0a91350e00fc44120b6734b2b1a5a37d7a37d5f4

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