Malicious PDF — malware analysis report

Static analysis result for SHA-256 55a90116e06892ed…

MALICIOUS

PDF

42.7 KB Created: 2020-09-18 08:29:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1ef09171454007ce043573f81d7b9053 SHA-1: 40effa9663140d3293100fe0cff7ed082e11b172 SHA-256: 55a90116e06892edcacf3e5c391fa6b3e3cb761554e37cf1e40524e0c40879e1
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link farm and a primary malicious redirector URL disguised as a "Bill Gates mother IBM contract" lure. The heuristic firings indicate the PDF is designed to redirect users to malicious sites, likely for phishing or malware distribution. No scripts were extracted, but the presence of numerous embedded URLs and the critical redirector link firing strongly suggest a malicious intent to drive traffic to external, potentially harmful, resources.

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.
  • 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.
  • 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/wix?keyword=bill+gates+mother+ibm+contract In PDF document text
    • http://nedepis.galianographics.net/uploads/1/3/0/9/130969162/7412343.pdfIn PDF document text
    • http://tulesa.actionins.net/uploads/1/3/1/8/131856809/temebonobeda.pdfIn PDF document text
    • http://files.americanbusinessmachines.net/uploads/1/3/2/6/132680994/ac90920224f.pdfIn PDF document text
    • http://bebazo.leonafrancombe.com/uploads/1/3/1/0/131070420/roxoburoseru_seginele_jidimaso_sulapomaso.pdfIn PDF document text
    • http://files.thehungrydreamer.com/uploads/1/3/1/8/131871864/bagejeramodufuxub.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/1/0428/2623/6063/files/depogizakewenapoki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4615/6960/files/74502295137.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/calcium_dietary_sources.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0899/1143/files/61373443654.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2355/7030/files/56842302395.pdfIn PDF document text
    • https://765fcc6c-4489-4a40-89cf-63dc0ae48a29.filesusr.com/ugd/e49726_79885d5306b04e66aaa43bccd0ced7e1.pdf?index=trueIn PDF document text
    • https://dd0d3632-f4f5-46f8-a84f-e05c3d2affe0.filesusr.com/ugd/d1fcfc_a4dd0ab6e0cf4eb89fdc7d5f82306658.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

Related samples 4

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_off00006815.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6815 5400 bytes
SHA-256: 67f093034b4c698934431278447bd6a783a2d10be35488da07272f23853875ff
font_01_sfnt_off00007a4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A4E 10564 bytes
SHA-256: affad169309face379a2ec4d165801cb30498e54b8e003458bd2c501d9886c4d

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