Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a4702fef0388c20…

MALICIOUS

PDF

65.5 KB Created: 2020-12-19 10:38:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: e3e72f75199c395b97973e517592edab SHA-1: 1528d913e90ad0f592f4a4fc1284a360d5634280 SHA-256: 5a4702fef0388c204f8b9a8ec8fac75f756b7568ed44c63f2d4334461fd20e3b
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a ML classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'trafftec.ru', which is likely part of a phishing or malware distribution scheme. The document body, though truncated, contains text related to software downloads, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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?utm_term=usb+bootable+software+free++for+mac PDF link annotation
    • https://bepupoxusiboma.weebly.com/uploads/1/3/4/8/134847186/vifikobimezip-xubarapanokakuw.pdfIn PDF document text
    • https://lubipufubuk.weebly.com/uploads/1/3/4/5/134597980/vekapimojuze.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/mevavuxemotemud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484821/normal_5fbbe086bb4ab.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/tagorarib/romeo_peach_festival_2019_frontier.pdfIn PDF document text
    • https://s3.amazonaws.com/nawosineromigi/arjun_the_warrior_prince_movie_song.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc53c14116eb00e3c6863a8/t/5fd670ba164d0f203c7da037/1607889082743/gepepibam.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc519b07d0c8f249d5c1082/t/5fc83880217b3604edd46fae/1606957184247/zekoxaxelogizakatub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b413d17-09fc-4892-86ae-b13c26221397/loguxadatinetiboxonob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6c67653-4b9b-44dc-bd41-9ce9d817f26d/magaxegusirujaze.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/wiliwexoxaninakov.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_off0000c3c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3C5 5248 bytes
SHA-256: 9d8eb7c20bb28039a77d2bc602723ecbac706fee6ba261a7880c5f19716be890
font_01_sfnt_off0000d5a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5A3 10464 bytes
SHA-256: 36c04b76ad597aaae556900b9996e50c010945abe22c548d0bba3ae809be4619