Malicious PDF — malware analysis report

Static analysis result for SHA-256 47fd584c141591c4…

MALICIOUS

PDF

70.8 KB Created: 2021-01-04 10:35:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 0fbac23fd50704a19b303a98fd8f6682 SHA-1: c4a52b8d5e46415bd1ac385fa2457d400a53a15a SHA-256: 47fd584c141591c4e50915be27787ae93bd805a804741cee8091592ba0dcddd1
104 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an external URL pointing to a suspicious domain, likely intended to deliver a payload. The presence of a 'download button' heuristic further supports a phishing or social engineering attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://trafficel.ru/aws?utm_term=hungry+shark+mod+apkpure PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4381546/normal_5fc39f5d82e85.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466376/normal_5fc40a99b116f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447098/normal_5fa7fef91c456.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450419/normal_5fa2a89cc287c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415937/normal_5fb4442fc0f67.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446931/normal_5fb5847a1a64b.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/zunaduxa/65453187694.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/girl_body_scanner_app_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2acd1bfe-c8bc-4304-8577-45708a7c28da/ps3_blu_ray_drive_replacement_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/napoledunadigo/huawei_flip_phone_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bec782b1-e449-4d97-8222-d20a848a3ec5/72803359354.pdfIn PDF document text
    • https://s3.amazonaws.com/degagaziv/college_board_ap_test_score_reporting.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_off0000d554.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD554 5468 bytes
SHA-256: 4cbb754c66e68a466291f4543df8b8794b60ad8efc25bca83c0ea5f05e33aa95
font_01_sfnt_off0000e7cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7CD 11248 bytes
SHA-256: 499c013276a3f1dd321b71effb16b250188d07a6be7b25f724b239318678c5db