Malicious PDF — malware analysis report

Static analysis result for SHA-256 7059162649c56d20…

MALICIOUS

PDF

76.1 KB Created: 2021-01-14 06:53:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 50e50509bd13d11d54ab32660873c64d SHA-1: d2aa3ad9c5bdedc78e3a213695940562779e4fbb SHA-256: 7059162649c56d20d753a0262a4db17398c8a2bdf221f2922040479fb6482461
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. Although no scripts were explicitly extracted, the presence of embedded URLs and the heuristic firings suggest the document is designed to redirect users to malicious infrastructure, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffking.ru/aws?utm_term=interview+answer+what+is+your+biggest+weakness In PDF document text
    • https://site-1180237.mozfiles.com/files/1180237/44968964299.pdfIn PDF document text
    • https://cdn.sqhk.co/mujexoxa/rCMuhjg/cute_cartoon_couple_status_video_download_mirchi.pdfIn PDF document text
    • https://cdn.sqhk.co/rewazexi/hajd7gh/niripuf.pdfIn PDF document text
    • https://site-1179441.mozfiles.com/files/1179441/94652238438.pdfIn PDF document text
    • https://cdn.sqhk.co/tuzijaxab/Kpo8Ugf/bluffton_weather_averages.pdfIn PDF document text
    • https://site-1204767.mozfiles.com/files/1204767/today_s_weather_chicago_hourly.pdfIn PDF document text
    • https://site-1171826.mozfiles.com/files/1171826/zadesivifujagopoke.pdfIn PDF document text
    • https://cdn.sqhk.co/mivufarowiwi/4geieja/xowojubexejewowaxejit.pdfIn PDF document text
    • https://site-1203683.mozfiles.com/files/1203683/96420424616.pdfIn PDF document text
    • https://site-1177860.mozfiles.com/files/1177860/classe_angiospermae.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_off0000df28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF28 5192 bytes
SHA-256: 7ba23ec2aa030a06d4d8cc46305b5314563ac657233aa331a6fad66af27fdd52
font_01_sfnt_off0000f0e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0E2 10888 bytes
SHA-256: 9c8e89bdb009da94a0fcc1acbb06906dec753afde103380ea1cfab490a762369
font_02_sfnt_off00011555.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11555 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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