Malicious PDF — malware analysis report

Static analysis result for SHA-256 be97d70f36b5e991…

MALICIOUS

PDF

107.6 KB Created: 2021-02-12 19:54:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 8ec3ad4506b5aba8e4ca2bd5bb8f1a90 SHA-1: 0955f2b209e3fda707b07818f43c647db282f61f SHA-256: be97d70f36b5e991aeca7a35117a91c362e383a5b6cdec3e962fe8143ac94f91
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9998

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://crophysi.ru/123?utm_term=roller+derby+rules PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4452599/normal_601029a8b9109.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367273/normal_5ffc8de02c079.pdfIn PDF document text
    • http://7lessons.space/viper_mk_4i8ogn.pdfIn PDF document text
    • http://hargotel.xyz/dragon_age_jowano0aps.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365555/normal_5fdc6e643f55c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372378/normal_5fdc0fda6d531.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426815/normal_60097ca39597f.pdfIn PDF document text
    • http://re-capital.ru/jiladituxkdcjs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419001/normal_6010ac7709c9d.pdfIn PDF document text
    • http://kihepc.xyz/915602097742uy8j.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4529087/normal_60192c832b386.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389821/normal_6020605e70432.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/padadutiseni/66754354103.pdfIn PDF document text
    • https://s3.amazonaws.com/vajefam/viximagerubujokixubimo.pdfIn PDF document text
    • https://s3.amazonaws.com/mefonevimimix/jet_boat_racing_game_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zabejuvijolu/arrayadapter_constructor_android.pdfIn PDF document text
    • https://s3.amazonaws.com/vizegemawokaxe/letters_and_sounds_planning_template.pdfIn PDF document text
    • https://s3.amazonaws.com/kukazowox/brother_shayari_image.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/begowiwafoparijikaluma.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000169db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x169DB 4860 bytes
SHA-256: 8969d0364a1f25ca26daeac3b7c0b2d0cb8a3a8c627f64802a4a65e05ac86912
font_01_sfnt_off00017a75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17A75 11300 bytes
SHA-256: 3809a968ace641f45cf572be60352c53d57df631b35f5edbc74e2b00376fad62

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