Malicious PDF — malware analysis report

Static analysis result for SHA-256 8596fb4c5735c77b…

MALICIOUS

PDF

75.8 KB Created: 2021-02-18 14:47:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: b3ef3bc7853d60a75d7c3ceb456b201c SHA-1: c23881f9133d1851c6177df6b5a0a3da417dd9dc SHA-256: 8596fb4c5735c77b6b17001268ec3317aeb94e7ecf2a48e90225df2213bb9e61
136 Risk Score

Malware Insights

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

The file is a PDF document that uses a lure related to printer setup to trick users. Heuristics indicate it's a credential phishing attempt, likely to harvest MFA codes or session tokens. The embedded URL points to a suspicious domain, suggesting it's part of the phishing infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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://seumenha.ru/aws?utm_term=how+do+i+connect+my+canon+mp495+wireless+printer+without+the+cd PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4498348/normal_600f5e370d536.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487431/normal_601b5fbcb9a15.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388048/normal_60095ee7dd18e.pdfIn PDF document text
    • https://cdn.sqhk.co/fedijadika/hanqjhf/36482750848.pdfIn PDF document text
    • https://cdn.sqhk.co/tupipitijil/idnZhfi/61659878310.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490371/normal_60025370e2a16.pdfIn PDF document text
    • https://cdn.sqhk.co/savadapo/jhgCgel/how_to_build_roads_faster_in_death_stranding.pdfIn PDF document text
    • https://cdn.sqhk.co/kasuvapexal/gehchg2/no_crop_pic_for_instagram_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/bikegola/jYZRCPM/70646115814.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367944/normal_601aa293bde9d.pdfIn PDF document text
    • https://cdn.sqhk.co/tedavevata/jfBhevp/wogijonusopatakumedumufi.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/tuzakifezara/nut_bolt_weight_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/sojuravewi/1791712433.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/bilinear_form_and_inner_product.pdfIn PDF document text
    • http://fenibume.epizy.com/echo_dot_2nd_generation_price.pdfIn PDF document text
    • http://suvowafavij.epizy.com/harvest_moon_story_of_seasons_gift_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/dinisemowoge/kekowomesorovigogoni.pdfIn PDF document text
    • https://s3.amazonaws.com/woneketelak/kofiwabod.pdfIn PDF document text
    • http://jonokib.rf.gd/48399762241.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_off0000e8c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C2 5836 bytes
SHA-256: 2da19a128688e26287e9e3a834b540397fa3c32fed8650e7d37f9d900963cfc0
font_01_sfnt_off0000fc91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC91 10772 bytes
SHA-256: ec6f0d73f131ad8995934c0322f5c1702e56791c53e7e84ba735ce0941e7714d

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