Malicious PDF — malware analysis report

Static analysis result for SHA-256 d97363efba254f59…

MALICIOUS

PDF

74.1 KB Created: 2021-01-09 05:57:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 5b0c77d6e419cd66910bf8089314929f SHA-1: 08b7bfc1d9df36c78d2dc674dcc7392aad68d0eb SHA-256: d97363efba254f59c4e5b02814e02fd241c29e6e7e7a7bf9597e50da552be8dd
96 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a machine learning classifier and ClamAV, indicating malicious content. It contains an embedded URI pointing to a suspicious domain, traffset.ru, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to plant life cycles, which is a common tactic for phishing campaigns to appear legitimate. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly suggest it's a phishing attachment designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffset.ru/123?utm_term=ciclo+de+vida+de+las+plantas+gimnospermas PDF link annotation
    • https://povurumupun.weebly.com/uploads/1/3/4/8/134884194/vodupazokeg.pdfIn PDF document text
    • https://dujizajep.weebly.com/uploads/1/3/4/7/134704211/tefadotuz_towabod_bavumipilep_zigowo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449618/normal_5fcb2a897c3ef.pdfIn PDF document text
    • https://somubafe.weebly.com/uploads/1/3/4/4/134444697/4fbe2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390068/normal_5f9bc9c65dae6.pdfIn PDF document text
    • https://sujarazigis.weebly.com/uploads/1/3/0/8/130813042/5910766.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372376/normal_5f9569494adef.pdfIn PDF document text
    • https://cdn.sqhk.co/zubuwebofe/YCLdKyn/lightseekers_physical_cards.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488314/normal_5faf8bcc9ec42.pdfIn PDF document text
    • https://cdn.sqhk.co/pemejurove/0ggjajb/jelomexifube.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e22c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE22C 5356 bytes
SHA-256: 0a993b8b7ca5071888cfcac4351b1fe9c2711db0ec72e5efdcdd7b8966abc0d7
font_01_sfnt_off0000f454.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF454 11404 bytes
SHA-256: 5491fb458212125535c59d8e7f7231f7545b7de2e0daef0eb21d8d2853bcdb73