Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0b1c5abbf6ed5c8…

MALICIOUS

PDF

82.1 KB Created: 2021-03-07 08:57:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: f354b059336e83d5916415c64a79458b SHA-1: 80136ed4b764596b054b7d08f7577f0df0ca6a15 SHA-256: c0b1c5abbf6ed5c8d784d1b1d7e057d83d298a5809e98926f4658ea2b9d8e505
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external links, with one prominent link pointing to 'https://xezojetit.ru/wix?keyword=resqtech+car+washer+manual', suggesting a phishing or scam attempt disguised as a product manual. The presence of a large number of external PDF links also indicates a potential link farm for SEO manipulation or further distribution of malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://xezojetit.ru/wix?keyword=resqtech+car+washer+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4467586/normal_5fe039264473d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465274/normal_6041c5c64b6a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389384/normal_5fe7f24e81049.pdfIn PDF document text
    • http://lemiritafuwab.22web.org/bts_wings_album_itunes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382629/normal_60262bbc5589e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451047/normal_600e6a63d329f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450003/normal_5ffb3455ada3c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ribizotujigotok.rf.gd/43501465924.pdfIn PDF document text
    • https://2cc12256-1025-444a-bacb-901a9f007bda.filesusr.com/ugd/d1fcfc_e0323fbbb20e40dda2beefe7c3c3874c.pdf?index=trueIn PDF document text
    • https://8ab8d0a6-ebcf-4503-ac90-3c5d9a0926ce.filesusr.com/ugd/8585d4_72eb33dbfb974d7897cc1194b8dbf5a9.pdf?index=trueIn PDF document text
    • https://a80c0318-1640-4d50-a016-df037fc402b9.filesusr.com/ugd/895bef_8a9e4ebf45c341479daa26c084b48468.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/ximupuv/biogeochemical_cycles_nitrogen_cycle_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuzo/14252757826.pdfIn PDF document text
    • https://s3.amazonaws.com/pafexegud/jojugidevexebuwowigoz.pdfIn PDF document text
    • https://s3.amazonaws.com/lusabifef/kesariya_jugni_song.pdfIn PDF document text
    • https://s3.amazonaws.com/wizitifowubux/pagegereginuronifowafofek.pdfIn PDF document text
    • http://sikofus.epizy.com/keedox_digital_media_player_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/church_of_scotland_safeguarding_form_sg7.pdfIn PDF document text
    • http://fibubaxuvuvixik.epizy.com/ballerina_style_formal_dress.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/clonezilla_install_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/20561222884.pdfIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/ffxiv_white_mage_quest_guide.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_off00010594.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10594 5264 bytes
SHA-256: 8e7c5c77dfe0ba78de57636571a43ee421f5519abf9d37c31f812056d1c25d32
font_01_sfnt_off0001176a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1176A 10428 bytes
SHA-256: a5b952e7d5839ca4b2029711127634ed26a0b052f86079347f6784ab03584711

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