Malicious PDF — malware analysis report

Static analysis result for SHA-256 8258c1664e52d076…

MALICIOUS

PDF

77.0 KB Created: 2021-02-20 13:24:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 50db98da7a2abb6846a5194f89054408 SHA-1: b6210dc612bbd5b235be06bb8bb0b6d07f70d300 SHA-256: 8258c1664e52d07689e89f61c3e713637185730d9ffed7738d5f716b580ee164
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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/strik?utm_term=poulan+2150le+chainsaw+parts PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4469365/normal_5ff64e9875b98.pdfIn PDF document text
    • https://cdn.sqhk.co/rubupidorinu/dBIhjij/used_furniture_huber_heights_ohio.pdfIn PDF document text
    • https://cdn.sqhk.co/tivinarafuvu/pEhcjCJ/92544026021.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445573/normal_5fee54c41fc1e.pdfIn PDF document text
    • http://vzruvayarttraff.xyz/garagimet9nkh.pdfIn PDF document text
    • https://cdn.sqhk.co/pavujakorige/igf3Kjg/police_x_ray_scanner.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408707/normal_5fe8fafda4c38.pdfIn PDF document text
    • https://cdn.sqhk.co/dutaxato/hhehbjj/roblox_free_robux_codes_2020_august.pdfIn PDF document text
    • https://cdn.sqhk.co/xaripisi/hsjhUhh/downhill_mountain_bike_world_cup_winners.pdfIn PDF document text
    • https://cdn.sqhk.co/xewafazuk/HigBjck/child_care_resources_near_me.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/wulagisi/asvab_math_study_guide.pdfIn PDF document text
    • http://novegiw.rf.gd/xofanefo.pdfIn PDF document text
    • http://lofoxos.epizy.com/gabrielle_union_book_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/tea_export_business_plan_template.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_off0000e0fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0FC 5444 bytes
SHA-256: d3d91f83f605c2c0aef180fe0bfb69eb9d4cb96d30a8f4d706fffd1e6cdfc003
font_01_sfnt_off0000f38c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF38C 11008 bytes
SHA-256: b0628472dac52b54a2b2f14376cddfe659ab49c1bfb67892735e195df8710576
font_02_sfnt_off000118ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118AD 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e