Malicious PDF — malware analysis report

Static analysis result for SHA-256 44ce8bf44fd61e86…

MALICIOUS

PDF

81.0 KB Created: 2020-11-12 18:53:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 73ee6388aa1349900fe4fcfd3dd4bd9f SHA-1: 6d7ba9164883cbecefa4ba7319e73ebb832e0ce1 SHA-256: 44ce8bf44fd61e86a693a957892c1a5b71f0c404aca2cbfd653fed5e56a1faad
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URL that leads to a suspicious domain, likely intended to host malicious content or phishing pages. The document body, though partially garbled, contains text suggesting a lure related to online movies, aligning with common social engineering tactics.

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://trafffe.ru/123?utm_term=watch+kuso+full+movie+online+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388611/normal_5f8e24a4da689.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406481/normal_5f93b8679a417.pdfIn PDF document text
    • https://mumixopid.weebly.com/uploads/1/3/1/8/131872042/6127036.pdfIn PDF document text
    • https://tibiwurab.weebly.com/uploads/1/3/2/6/132695994/78292.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487201/normal_5faa4f76e844a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374710/normal_5fa366e112b0c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365539/normal_5f94bc17e56ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368736/normal_5f89ad046b46b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379732/normal_5f99f03981824.pdfIn PDF document text
    • https://wetuxabo.weebly.com/uploads/1/3/0/8/130873937/jagenepajej-gatavubesenu-rakokumexo.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/kizuporowefib/sensus.bps.go.id_2020_cek_login_gmail.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/87073306179.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6872958d-1db0-48f1-bf15-d1284e60dd28/luporapasunak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a00618da-323a-43d1-9c05-045f4e69abb2/57963934571.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_off00010156.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10156 5260 bytes
SHA-256: 4cba3806699f0e7a1fd3734a92382d92a6854d8de54a173384d91b9c07d2a42b
font_01_sfnt_off0001131e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1131E 10552 bytes
SHA-256: 03e5bc70a15891d379516645fcd7dd086674b886dfcccf22785e2106aad2f762