Malicious PDF — malware analysis report

Static analysis result for SHA-256 547e07df22c8bf6e…

MALICIOUS

PDF

73.9 KB Created: 2020-12-15 03:18:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: ac21a0aafecb1c3008cd05a958fbfad6 SHA-1: 56bee66fabcc11cd7957b6615b65611bf926f98b SHA-256: 547e07df22c8bf6e26e572ad4593f00d34da1c4a828e9a5bfb3eec91c7d9c8a0
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. It contains an embedded URI pointing to 'trafffe.ru', which is highly suspicious. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest an attempt to redirect the user to a malicious site, likely for phishing or malware distribution.

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=shopping+empire+2+hooda+math PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4424037/normal_5f9a5e0e50efb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377642/normal_5f8fd262547dc.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/faluzotixupi/65632003955.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc15bd3ff13940aa242d827/t/5fc7938cb2fa4660c8d86447/1606914958628/my_talking_dragon_mod_apk_old_version.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10b049b9-4b9c-4ea3-baff-d02767a844ca/vampires_masquerade_bloodlines_mods.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4cf626609fd0ee7aa7f01/t/5fceff8f7c36362741a562f9/1607401359115/hungry_shark_game_play_now.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc50e7aff13940aa25a4d24/t/5fc92f724485294f68b0eeac/1607020402749/zamonirimanur.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc119b992c50b1a1e78b725/t/5fd1918523f2866aa3833cc5/1607569797976/84056665980.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09508ca7-fa56-47f5-9a05-95d6a95ca9be/namaz_sureleri_sesli_indir.pdfIn PDF document text
    • https://s3.amazonaws.com/mutirexa/forklift_operator_training_certificate_template.pdfIn PDF document text
    • https://s3.amazonaws.com/luxaduzimase/medical_dictionary_for_pc.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_off0000d241.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD241 3476 bytes
SHA-256: c46dbfd335ee24d55af00bcefaffe662795c79a9e7559296c7914857f09a1842
font_01_sfnt_off0000debe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEBE 5400 bytes
SHA-256: b422467d5fa9ea6428fb3c1dec3672e7ed9adda759baef771cfcb629552d1e4e
font_02_sfnt_off0000f0e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0E9 12660 bytes
SHA-256: d5918f326a06b4db8f3f8f0ba32575cde20ee0082b67913f5d6bcebe064d5f0f

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