Malicious PDF — malware analysis report

Static analysis result for SHA-256 3015fe60e2b8b20c…

MALICIOUS

PDF

65.7 KB Created: 2021-01-08 14:39:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: c005aea4f01300eb4a3350843f9db027 SHA-1: 94b7d4262d697bcbfb41af8b3284f52a1e2f69aa SHA-256: 3015fe60e2b8b20c169ad0ad6f4b20ef4a0d7dc905798922f273f0d93fb1a36b
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a significant number of external links, with one heuristic specifically identifying a 'PDF link farm'. The presence of a malicious ML classification and ClamAV detection further supports its malicious nature. The embedded URL 'https://traffking.ru/aws?utm_term=saaho+1080p+video+songs++tamil' suggests a potential phishing or content-luring attempt, while the link farm indicates a broader malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://traffking.ru/aws?utm_term=saaho+1080p+video+songs++tamil PDF link annotation
    • https://cdn.sqhk.co/narobalof/ihjJU7V/wusisuwizadiwetemuxo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446045/normal_5fba2772df8db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409118/normal_5fb81ef99ac2f.pdfIn PDF document text
    • https://cdn.sqhk.co/fexejikexew/jgjcidk/facebook_stock_market_today.pdfIn PDF document text
    • https://gozofuma.weebly.com/uploads/1/3/0/8/130874065/fikufe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415936/normal_5fa59c5f70372.pdfIn PDF document text
    • https://doxizuzipoleri.weebly.com/uploads/1/3/5/3/135323895/5763147.pdfIn PDF document text
    • https://cdn.sqhk.co/daluzowinasu/kkig98N/how_to_draw_baby_yoda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366957/normal_5fa287d25f56e.pdfIn PDF document text
    • https://cdn.sqhk.co/sojowidaz/dSbdhd8/zoniraxasera.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/paropabaru/gmac_gmat_score_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39ac5374-1772-498c-8949-6ed084548d6c/86713458970.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20148342-fa39-4918-9ed2-349edf4c0f0f/11846716779.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_off0000c207.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC207 5828 bytes
SHA-256: e9a83db999ddc43f860a2c01a150629ca2deabc6a6e2a3ab1780baa03c853295
font_01_sfnt_off0000d5c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5C2 10616 bytes
SHA-256: ce984217257ca3d9e7d5e8be5502410bccdf2d2199502f2d027190f2adb983af

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