Malicious PDF — malware analysis report

Static analysis result for SHA-256 110571c39c7869b5…

MALICIOUS

PDF

60.0 KB Created: 2020-11-20 16:58:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 2e2fabe23e68dffeb54c1f08cd5de16b SHA-1: e9df934f3849d200ec84cfc5bdce40208d8a5da3 SHA-256: 110571c39c7869b57723d0bfe6eaefb50ddc83abb7312d0a3c4d5d91021f4470
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The document body contains a seemingly innocuous title related to a video song, which is likely a lure to encourage users to interact with the embedded URL. This URL points to 'trafftec.ru', a domain associated with malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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=yaari+avneet+kaur+video+song++pagalworld PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4486042/normal_5fb41fb714bc7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420599/normal_5f9b88bc42961.pdfIn PDF document text
    • https://majijajivetik.weebly.com/uploads/1/3/4/2/134265766/xenugiluwega.pdfIn PDF document text
    • https://gatepeduvemixif.weebly.com/uploads/1/3/4/6/134669895/femilokibor-morabutuxufix.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464539/normal_5fa722de85656.pdfIn PDF document text
    • https://mepafuxutare.weebly.com/uploads/1/3/4/6/134660934/5b8bf3948c1e.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/3158d742-742f-4e42-90ef-1c4be3f3f9a1/wopaboko.pdfIn PDF document text
    • https://s3.amazonaws.com/pexodugosa/fiditijiridopogage.pdfIn PDF document text
    • https://s3.amazonaws.com/wuzalugiseto/10th_class_maths_similar_triangles_solutions.pdfIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/85108582940.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/96487833514.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efa2a682-4cfd-4450-896d-ed3a1a0302b9/dias_feriados_2016_puerto_rico.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_off0000ad48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD48 5304 bytes
SHA-256: d101fb10d15a84857398df6ec3d15cc052af8a77bedde4006cb964006676c9c4
font_01_sfnt_off0000bf7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF7C 10044 bytes
SHA-256: 9c5c2cc3a4972a225ec15aa89c574b7364b419c0d3f3b41b57c277f40554929f