Malicious PDF — malware analysis report

Static analysis result for SHA-256 b010a89223efee4a…

MALICIOUS

PDF

72.6 KB Created: 2020-11-11 01:09:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: f924a6a683ce6e170ef1a3a476794fd4 SHA-1: 87dff6d17c4caa53b89f90f414da863fd6d9a314 SHA-256: b010a89223efee4aed204cd5e76758692f7bce6aec3f5f1ecfff9cfa57aae701
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources, forming a link farm. One critical heuristic indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://traffmen.ru/aws?keyword=amazing+race+rules+for+contestants'. This suggests the document is designed to redirect users to potentially harmful sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://traffmen.ru/aws?keyword=amazing+race+rules+for+contestants In PDF document text
    • https://cdn-cms.f-static.net/uploads/4405641/normal_5fa338e40cc7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367665/normal_5f890aefc3a93.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365655/normal_5f874b0c39ba8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367674/normal_5f88ac4bc68f0.pdfIn PDF document text
    • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/6569934.pdfIn PDF document text
    • https://tekegalesi.weebly.com/uploads/1/3/0/7/130740489/lopakexinamozamig.pdfIn PDF document text
    • https://dumitekajeru.weebly.com/uploads/1/3/0/7/130740207/fapibujazubid.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc331f7a-475c-4568-82ac-44cbe0241d8b/59684633815.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f02bef46-b4c0-45b1-adc1-44a8146a4481/zixuwewexebuje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18e1b267-0b39-4ca5-bb0e-78ffb5f69c21/98832085049.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a0dc9ab-974d-4d1b-bf0a-e4d5a2c9c90b/unfaithful_movie_download_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7cb56c2d-e780-40d2-b774-73a473f4bc13/zikugusu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52dbb12c-0dfe-4af2-9364-98a2b7aa6013/22103228133.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/afe375bf-ea7b-43e1-89a0-6bfe5aac9374/carprog_airbag_reset_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9881046-b1e0-4b09-b71d-989a8cc3a373/kufokez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90159db3-e811-45b4-bc77-d6e53dbf454e/76518957092.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_off0000df0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF0A 5240 bytes
SHA-256: a873e7ccc918127e3b9ded009efeb170211ab5e405706349d7735b605bb76c2f
font_01_sfnt_off0000f0cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0CD 10888 bytes
SHA-256: 2dc954f7eb5047d1978630ab60984864bcb06c5fda447fce7b2747bc3c31ccd4

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