Malicious PDF — malware analysis report

Static analysis result for SHA-256 04e4a219d6df4a77…

MALICIOUS

PDF

156.7 KB Created: 2020-12-25 15:43:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 0b2faa973683fa58e987776c2e83be11 SHA-1: 7eb14f7ea9dd608b7d2d34807ba0d17c1276ba9d SHA-256: 04e4a219d6df4a778ddcd86475c41ceac9dcd8ed09987a63eef1f47d3c2c8be4
156 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'trafffe.ru' suggests a phishing or credential harvesting attempt. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document may be instructing the user to open a password-protected archive, a common tactic to bypass security gateways.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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/strik?utm_term=whatsapp+messenger+business+model PDF link annotation
    • https://cdn.sqhk.co/lasesekov/gd67a4t/72608604664.pdfIn PDF document text
    • https://cdn.sqhk.co/nupegefozub/gg9chex/black_and_gold_christmas_decorations_ideas.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/vuzotisenixava/furaleferubefimebe.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/48121353050.pdfIn PDF document text
    • https://s3.amazonaws.com/vebogotexaf/13622330830.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/parafrasi_cantico_delle_creature.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a159429a-f799-414a-a6b8-afba1ab515dd/89091942001.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f640a2e2-70a2-4b29-bfbd-abe9c25b5ed8/8195528114.pdfIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/black_widow_movie_in_tamilrockers.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/44637919260.pdfIn PDF document text
    • https://s3.amazonaws.com/vogubivajavofu/ccd_vs_cmos_sensor.pdfIn PDF document text
    • https://s3.amazonaws.com/povelenavuviw/dustwallow_marsh_vanilla_quest_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/objective_zoology.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_off00021993.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21993 5408 bytes
SHA-256: fe857028c12fc8a76adf3cc7eb4e1af0bcbd9363400ea0be3ca0033beb36cff6
font_01_sfnt_off00022bce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22BCE 13276 bytes
SHA-256: a62c3e98a3520abc26656ebcf1737d192b57a64761259f9c5531b70f12f5f35b
font_02_sfnt_off00025721.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25721 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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