Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd89999927710bce…

MALICIOUS

PDF

86.2 KB Created: 2021-02-23 23:47:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: bd8145daaffb982c031502de7a3e2596 SHA-1: 694efe46cbfe3385379b3b76aca537c39eec5de0 SHA-256: dd89999927710bcef67ceb7095e509d9a202eea3c9dd1afb645af02f8ba000d6
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by a ML classifier and ClamAV. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body is heavily obfuscated, but the presence of external URIs and the overall detection suggest a phishing or malware delivery attempt.

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://jacksth.ru/aws?utm_term=axial+scx10+2+rtr+vs+kit PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4405641/normal_601b550db87d8.pdfIn PDF document text
    • https://cdn.sqhk.co/dibirolinu/jddAjeo/photoshop_cs6_color_effect_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422640/normal_602955fa95105.pdfIn PDF document text
    • https://cdn.sqhk.co/bavimimo/ibjbLie/58203455454.pdfIn PDF document text
    • https://cdn.sqhk.co/kigoxeni/gfibaqm/32665909853.pdfIn PDF document text
    • https://cdn.sqhk.co/zuvomafoda/izSZygh/prism_armageddon_song_lyrics.pdfIn PDF document text
    • https://cdn.sqhk.co/pekotegafod/9gdihge/lenelizafuv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465010/normal_5fc7751a93ec1.pdfIn PDF document text
    • https://cdn.sqhk.co/xonarewu/cieWzja/bokapodogejakegibo.pdfIn PDF document text
    • https://cdn.sqhk.co/gobikazifelo/NhcgiMp/fowum.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/wekibik/tusak.pdfIn PDF document text
    • https://s3.amazonaws.com/libusamagowuvo/zadalinililobevuj.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/clothing_line_business_plan_template_free.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000104d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104D8 5300 bytes
SHA-256: 2fa8db6430bd89b18830ef05e543d2b3de657dbeef9bce371791d6b0a66e41c5
font_01_sfnt_off000116f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116F9 3720 bytes
SHA-256: d0c9e33916e9e64e42e31bcf0d345f6c2fcd41735b1a34df0119bd0eb1094281
font_02_sfnt_off0001225d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1225D 12060 bytes
SHA-256: ab061f028685677c27f48616e929e05b2ec04538bb1629cd33aae0fd00517579

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