Malicious PDF — malware analysis report

Static analysis result for SHA-256 caa3c344e8bba475…

MALICIOUS

PDF

70.8 KB Created: 2021-02-11 16:55:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 701c198d55a519b9b413e18c45cbebba SHA-1: 29a2631dcd21ef0853f663c586467eafe8bdc6c8 SHA-256: caa3c344e8bba4750277258a3b5b2f8c16944ed60c78f95df2b7b8673efcf73a
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/wix?keyword=moodle+ssc+cooper+university PDF link annotation
    • https://cdn.sqhk.co/pekobenew/jfIidZC/zemisapadewuridosinume.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387224/normal_5ffa58f7c5b75.pdfIn PDF document text
    • http://astropsychology.website/partnership_business_agreement_templatey1lb8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476767/normal_6005af4e803ea.pdfIn PDF document text
    • https://cdn.sqhk.co/zanaforare/RhbRjjx/36624731728.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409257/normal_5fe0e17a1d09c.pdfIn PDF document text
    • https://cdn.sqhk.co/romilononove/jdigCgd/56659177554.pdfIn PDF document text
    • http://freefire-gifts.com/6426072021yrh8t.pdfIn PDF document text
    • http://esparks.ru/how_to_make_custom_emojis_in_discord6bcp4.pdfIn PDF document text
    • https://cdn.sqhk.co/wekababu/huicxQw/jimojalokuxomasolemilu.pdfIn PDF document text
    • https://cdn.sqhk.co/vulovosovem/apnhahc/song_quiz_questions_uk.pdfIn PDF document text
    • http://vagoneviwesum.66ghz.com/kififu.pdfIn PDF document text
    • https://cdn.sqhk.co/tolononof/6Bggjhj/innova_business_management.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://konazosite.epizy.com/vazisanerekazuzusokolal.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/33962196522.pdfIn PDF document text
    • https://s3.amazonaws.com/nisoxow/xodepebowudusi.pdfIn PDF document text
    • https://s3.amazonaws.com/wiremeresegikon/2025044172.pdfIn PDF document text
    • http://doketam.rf.gd/betternet_free_filehippo.pdfIn PDF document text
    • https://s3.amazonaws.com/godewumazek/us_india_bilateral_trade_report.pdfIn PDF document text
    • https://s3.amazonaws.com/wewuxuviwar/78498127114.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_off0000cae7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAE7 4904 bytes
SHA-256: e9748a28460e516a2161f5d40906b0ade8aceebce3f14e1bfdb010dda2c0fc1f
font_01_sfnt_off0000dbb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBB9 10640 bytes
SHA-256: 2db1f7a9f49d63b6496efde61bded5321d4ca5c2c83f49d106e3d8cac11d43a2
font_02_sfnt_off0000ffe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFE2 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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