Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ba612bdf5c576ac…

MALICIOUS

PDF

66.7 KB Created: 2020-11-24 00:22:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: bc46d2c530b93a02a9165232e73acc47 SHA-1: 924af0d477d8dc7cbb276a598b513cfbec02ec29 SHA-256: 0ba612bdf5c576ac5d1171f255dca06c6b81e35afc330ec2e253e021c786f51b
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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://trafffe.ru/123?utm_term=trek+bike+sensor+manual PDF link annotation
    • https://saxoxukodumixab.weebly.com/uploads/1/3/4/6/134635675/gopudodokesutisape.pdfIn PDF document text
    • https://tugoxalimirufa.weebly.com/uploads/1/3/4/3/134310877/baa486d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381976/normal_5f8e4ca6e212a.pdfIn PDF document text
    • https://redodire.weebly.com/uploads/1/3/1/4/131408340/3531073.pdfIn PDF document text
    • https://vefoxetewezelir.weebly.com/uploads/1/3/1/4/131483279/topalot_bimezudute_fidamuxolalu.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://s3.amazonaws.com/vavale/vetuwowikogimajul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10d755b7-66ea-4d33-8cf2-740a13096a68/tegurutugu.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/filmic_pro_free_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/075f482c-bd9a-44c8-94cd-5802a8f8f8b9/durunazepodo.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/bevagaraxoju.pdfIn PDF document text
    • https://s3.amazonaws.com/dazutun/wisopinirisonep.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_off0000b733.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB733 4784 bytes
SHA-256: 2744ad8573f1219ef6e79e0c8447d1321f4c56e3963216e64f38d825b411c7c4
font_01_sfnt_off0000c746.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC746 13060 bytes
SHA-256: 2ab62109675efc1796dc8ee38f5f6b7aff4c6b263e51ff00706123c00ff39cd0
font_02_sfnt_off0000f00d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF00D 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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