Malicious PDF — malware analysis report

Static analysis result for SHA-256 1efe281871097c1c…

MALICIOUS

PDF

73.8 KB Created: 2021-04-04 19:15:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 85152110fc138b49ec00fcaec197b4a8 SHA-1: 10da7415e36ca473811ad8e05cb77a023f0bd994 SHA-256: 1efe281871097c1cb9eb01cfd1bb20298293f0477639ed3a73d75195f82deeea
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URI pointing to 'baarspo.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to 'refilling vape pods' to entice users to click the malicious link.

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://baarspo.ru/strik?utm_term=how+to+refill+renova+zero+pods PDF link annotation
    • https://cdn.sqhk.co/vibisimak/jhchjhb/best_southern_civil_war_generals.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502175/normal_5ff6935a823cd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470400/normal_5fff9ec61dac0.pdfIn PDF document text
    • https://cdn.sqhk.co/kalusoxat/2Uibpw3/foxovesabababififelazulov.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464082/normal_6063f17b82558.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481994/normal_5fde2ddc6c640.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482023/normal_6034982325ab9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453144/normal_5ff1bd3adf3dc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470029/normal_6000ad76655df.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/aeed6034-0c93-4275-a4ee-9da2601561b0/trane_mini_split_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1e63d16-6934-41b1-9c60-255843433bf8/pixidenoxizaruxe.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/e_commerce_android_app_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/dream_interpretation_in_islam.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/presidential_book_of_secrets_page_47.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6180ed4f-5078-4e89-8e73-e05834d2619d/oedipus_rex_essay_fate_vs_free_will.pdfIn PDF document text
    • https://s3.amazonaws.com/neporezofov/what_classifies_a_hamlet.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/daxijazevinodimajul.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/kcet_2016_question_paper.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/687b9250-66db-47b1-86a6-ee2d10bdfec1/22458665314.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_off0000e176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE176 5200 bytes
SHA-256: 3e68af74b058af7c5a3026008ac4dcaecc54aad4edb786338611ff94272c0b20
font_01_sfnt_off0000f351.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF351 11324 bytes
SHA-256: 388f943532dd9cbcec426ca5737da4f0b6d115f3089db0771e5496174afb22c9

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