Malicious PDF — malware analysis report

Static analysis result for SHA-256 4202066463fdf58b…

MALICIOUS

PDF

88.6 KB Created: 2020-11-20 03:39:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 8d4da10458965f09a31e0251089fdb88 SHA-1: 9d54ad46ed1b9de41f0e6d74884d79aed172c5e0 SHA-256: 4202066463fdf58be1e9791b7dbf0a4e1be58df49ed9356fa8ce7a7955e0ac0c
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://traffine.ru/aws?utm_term=jazz+guitar+arpeggio+exercises+pdf PDF link annotation
    • https://pepisukuwen.weebly.com/uploads/1/3/1/6/131606293/pazopenatizot.pdfIn PDF document text
    • https://gobisenuginofaz.weebly.com/uploads/1/3/4/4/134490447/xewuwa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387703/normal_5fa0cfbcdf0fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497395/normal_5fad542f6f27e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450427/normal_5fad8977986be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379219/normal_5f98f65a51126.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449399/normal_5fa62df80808d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427781/normal_5f98b2287c4f4.pdfIn PDF document text
    • https://xitukuwelup.weebly.com/uploads/1/3/4/3/134340625/74e88eb3ff4c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408588/normal_5fb685cc7d4fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458838/normal_5fa553788cd95.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/a2c5bc94-a4b2-49c8-8c5d-718e0a57f0ab/9_innings_2018_baseball_mod_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c86a9c48-77cb-4cb5-a279-b26cc0311984/gifixag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7371f76-2290-4cbf-ba35-c1a9983bb761/download_mien_phi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/925ee52f-a690-4178-9c5e-81f8ec93c7b5/muvalowagomikope.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_off00011060.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11060 5400 bytes
SHA-256: 9dea501d68c18ec016701cc3db9929d0aa7a7f2156d92163e737d677416e3201
font_01_sfnt_off000122d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122D8 3020 bytes
SHA-256: e43126e768bed0c6760af5bf915d28e86850215952467f34315c079a96f53be6
font_02_sfnt_off00012f13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F13 11020 bytes
SHA-256: 833143281b00941087cc0024582abb7055502e3638988eb1f98eae87545c845a

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