Malicious PDF — malware analysis report

Static analysis result for SHA-256 faafbaf8dd6749c0…

MALICIOUS

PDF

78.8 KB Created: 2020-11-11 06:09:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 88aecb8b8c1b2fbc36fdb8db063c099f SHA-1: 9b5f0bbd9689bf40a5ffc71e15b2faf3e4458096 SHA-256: faafbaf8dd6749c073185ad589cb3fe954281cd911a9c79465f08fca09bb2886
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://trafftec.ru/aws?keyword=watch+archer+full+episodes+online+free PDF link annotation
    • https://sevanilab.weebly.com/uploads/1/3/1/4/131437268/e13a1631.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380530/normal_5f9777918c30a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417535/normal_5faac18e4f253.pdfIn PDF document text
    • https://gazofifato.weebly.com/uploads/1/3/4/4/134496451/putuxod.pdfIn PDF document text
    • https://kawuloxegulul.weebly.com/uploads/1/3/4/3/134389306/nudupexedug.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393018/normal_5fa28925ece5d.pdfIn PDF document text
    • https://ruxibero.weebly.com/uploads/1/3/4/4/134403554/59f48a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471985/normal_5fa586c2d9fa1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379722/normal_5f992399cdc3f.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/sojaxub/momojotax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e1f8ccd-84b4-4a75-80f7-16744aafca28/jidekepivodovekoni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63356b7d-d680-458a-a503-da46b5ee33e0/bajovolafemex.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_off0000e9a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9A6 5140 bytes
SHA-256: a84a1f10faad5b2f7b31796b2733aeedcb18b402dfd3c13b466792545d23e99a
font_01_sfnt_off0000fb1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB1E 10824 bytes
SHA-256: d6b944afeac617f6703ec7859832e6e5805f4254c465ce5e7d9806c6b5b1ecb2
font_02_sfnt_off00012011.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12011 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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