Malicious PDF — malware analysis report

Static analysis result for SHA-256 33694f58c728e6a4…

MALICIOUS

PDF

66.5 KB Created: 2021-01-10 18:09:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 75bddae12fd7b489d73a002f92ad7c75 SHA-1: 541a339aede0301b93b5d0004539255f0ecf9166 SHA-256: 33694f58c728e6a47ad298a97af5b2450c42657bdc5ba07dabdd53b32817b1ae
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing purposes. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to malicious content, potentially exploiting PDF vulnerabilities.

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://trafftec.ru/aws?utm_term=happy+children%2527+s+day+card+template PDF link annotation
    • https://cdn.sqhk.co/jonuwezipagi/bkhhdr7/adt_pulse_app_login_issues.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385648/normal_5fe00bb692916.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369161/normal_5fbd01b96e4cc.pdfIn PDF document text
    • https://site-1176685.mozfiles.com/files/1176685/game_studio_tycoon_3_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402478/normal_5fb5619727149.pdfIn PDF document text
    • https://cdn.sqhk.co/mavozopofug/iigiceh/98380661287.pdfIn PDF document text
    • https://cdn.sqhk.co/bamikalagov/agjL7mC/zero_gunner_2_classic.pdfIn PDF document text
    • https://cdn.sqhk.co/momujolo/piadbTR/zombie_hunter_sniper_apocalypse_shooting_games_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446374/normal_5fa22ebeda69c.pdfIn PDF document text
    • https://site-1166670.mozfiles.com/files/1166670/79460943116.pdfIn PDF document text
    • https://cdn.sqhk.co/wuwovodegi/vSjjtGp/pikmi_pops_bubble_drops_maker_refill.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
    • 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_off0000baea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAEA 5088 bytes
SHA-256: 0abbe55f8fe44f5b485a1056391bfc236e74392a9010d5ba8dce4ac732dfa73f
font_01_sfnt_off0000cc02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC02 9808 bytes
SHA-256: 6add3219c3da9984b0f55c25eb8fcb09b58a6d29477b2b5535593684725f17ad
font_02_sfnt_off0000ed8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED8E 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e