Malicious PDF — malware analysis report

Static analysis result for SHA-256 610e84702eb8535b…

MALICIOUS

PDF

66.1 KB Created: 2020-11-11 08:44:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 289031884ea90bd377a6b5cdef96eb6c SHA-1: d713ab6cc931045d5844aac0f25c2f86d16cd9bc SHA-256: 610e84702eb8535bcf8a8ba7c3c40a4c98702204f8359d3b770ced0e0996d458
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 0.9998

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://trafffi.ru/123?keyword=minecraft+crafting+guide+2020 PDF link annotation
    • https://vixijusodu.weebly.com/uploads/1/3/0/7/130776714/dadijex-mubolideremom.pdfIn PDF document text
    • https://wurikosaradusif.weebly.com/uploads/1/3/1/3/131384544/dotefajakisov.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372360/normal_5f9468b71d67f.pdfIn PDF document text
    • https://befutoxe.weebly.com/uploads/1/3/4/4/134443098/galize-jubewenamiz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381973/normal_5f8c8c6ed9b24.pdfIn PDF document text
    • https://mumixopid.weebly.com/uploads/1/3/1/8/131872042/5088908040ee7d.pdfIn PDF document text
    • https://vilujelirajoki.weebly.com/uploads/1/3/4/3/134378771/donubepudaxilo.pdfIn PDF document text
    • https://kivuligob.weebly.com/uploads/1/3/0/8/130874143/zuronuvef_bazakulanigipe_bofufuvup_xininideweruve.pdfIn PDF document text
    • https://fozufamegevavup.weebly.com/uploads/1/3/4/5/134586639/a93f2.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/4cbe79e2-3940-482d-9bf7-51e4c9aecb29/13649219786.pdfIn PDF document text
    • https://s3.amazonaws.com/dorulusof/76477721083.pdfIn PDF document text
    • https://s3.amazonaws.com/mejawiwomak/how_many_layers_of_skin_are_on_the_human_body.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/sonekawarana.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8f535c3-e4b6-4e21-ad26-93c1d3485a2d/18100571701.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/30462635468.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_off0000c65f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC65F 5260 bytes
SHA-256: a4d80ec7e9d7f8ff03833de179976e4e86341c498b2eea75a08f17c1e7078d28
font_01_sfnt_off0000d857.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD857 10164 bytes
SHA-256: ea539d335e8b99652582f4b48c96dc9ae3bf4138e41272f79f1ce5899707a2de

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