Malicious PDF — malware analysis report

Static analysis result for SHA-256 e317f0034a35b2f7…

MALICIOUS

PDF

77.7 KB Created: 2021-03-24 06:51:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: c1532c006292954f7a9da7580f34046e SHA-1: 27b161e4ae70d7c0beceea3e8b935fb572d2d809 SHA-256: e317f0034a35b2f7694a998f62901bdcc0467add595b8fc09a3509e10d9c5b55
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The heuristics reveal it contains a significant number of external links, forming a link farm hosted on disposable domains, suggesting a phishing or SEO manipulation scheme. The embedded URLs point to various domains, some of which are likely part of this malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://botokaw.ru/strik?utm_term=zagg+rugged+book+keyboard+%2528ipad+mini+5%2529 PDF link annotation
    • http://getcreditcheck.info/53930914634c6yj7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451563/normal_6055994012e4a.pdfIn PDF document text
    • http://table-wait.com/29635137925zy9f8.pdfIn PDF document text
    • https://fadesirowawilej.weebly.com/uploads/1/3/1/6/131606674/xagofumapag.pdfIn PDF document text
    • http://zesegalos.scienceontheweb.net/physiology_of_human_eye.pdfIn PDF document text
    • http://investmag.org/suzuki_quadrunner_250_2wd_carburetorz380h.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409405/normal_6035752c546ee.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485822/normal_5fff42ee5ea53.pdfIn PDF document text
    • http://zoneeuro.pro/mujexuzpj9d.pdfIn PDF document text
    • http://kavelokafozi.medianewsonline.com/katabesus.pdfIn PDF document text
    • https://selijemex.weebly.com/uploads/1/3/5/3/135335383/52d8d019d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487663/normal_5fd27b71d793b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474752/normal_603aa92ce108a.pdfIn PDF document text
    • https://radofagomomixa.weebly.com/uploads/1/3/4/1/134132329/5226395.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/1fd5dc5f-e381-410d-a53e-403c021c8a87/how_to_learn_italian_easy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e62da59-d1e6-4e0e-b026-aa573c4a1da0/govinatezamunomobefofovel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdd2b23d-9458-446e-9a6d-74b0b0c27f72/88517084950.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d68222f8-ab31-4f84-a626-4b96e195fad4/dagezebijudo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e276.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE276 5412 bytes
SHA-256: e074175feac13afc8764b73e783bef8d7d1f454f131a87dd0351b9dab881cc89
font_01_sfnt_off0000f4d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4D5 10804 bytes
SHA-256: 8ade25ff1c8d6c3a20a1ed33d5974977a30f9c3abe3e853e292c0ce53b0d674f
font_02_sfnt_off000119d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119D3 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

Open this report in the interactive analyzer, or submit your own file for analysis.