Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fd07e4f1046f40d…

MALICIOUS

PDF

72.4 KB Created: 2021-03-19 13:39:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45dc446ae46be7e5ec22942f36e2e6ae SHA-1: 6129810d27370e466c7adc5cfff356eedb079322 SHA-256: 8fd07e4f1046f40d62cc9bd036e9079681496ea33e0542a0ee640438e850a6f2
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains an embedded URL that leads to a suspicious domain, likely intended to host a phishing page or a further stage of malware. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Tite reach 1/4'.

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://xezojetit.ru/wix?keyword=tite+reach+1%252F4
    • https://static.s123-cdn-static.com/uploads/4385228/normal_5ffc33bf775b1.pdf
    • https://cdn-cms.f-static.net/uploads/4486201/normal_5fd2f4b6ec109.pdf
    • https://cdn-cms.f-static.net/uploads/4458634/normal_5fda6d397cd56.pdf
    • https://cdn.sqhk.co/benibavagoge/iheiijh/stack_tower_jumping.pdf
    • https://cdn.sqhk.co/kinanekoxo/PmqjbVs/super_hero_tycoon_codes_2019_july.pdf
    • https://cdn.sqhk.co/jotepomi/gsjbgcz/52450438698.pdf
    • https://cdn-cms.f-static.net/uploads/4366357/normal_6042fe489a29e.pdf
    • https://cdn-cms.f-static.net/uploads/4389090/normal_601ed64a04553.pdf
    • https://cdn-cms.f-static.net/uploads/4387806/normal_5fdc7b1730728.pdf
    • https://cdn.sqhk.co/vazedibimi/8ibiezQ/teddy_roosevelt_terrier_puppies_for_sale.pdf
    • https://cdn.sqhk.co/ketifoseja/emRjhjg/bluffton_sc_restaurants.pdf
    • https://static.s123-cdn-static.com/uploads/4380088/normal_5fc6a00b6929c.pdf
    • https://static.s123-cdn-static.com/uploads/4412593/normal_600452f2ddc9c.pdf
    • https://static.s123-cdn-static.com/uploads/4493553/normal_5fff9aad705ec.pdf
    • https://cdn.sqhk.co/xubupigegi/h10hchc/8140755124.pdf
    • https://static.s123-cdn-static.com/uploads/4476126/normal_6006305b3d933.pdf
    • https://cdn.sqhk.co/kozutani/7igFGDC/jesuwidagupepudarulixed.pdf
    • https://cdn.sqhk.co/soxuvezosapa/hgg4geH/fekinuwime.pdf
    • https://cdn.sqhk.co/pelonulu/cFoDhgi/battle_of_berlin_1945_free_full.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d00a.bin
080531e4306b97102a7a996befd6cc04121bcbac0ed7abdb64aecf1748a16c6c
pdf-font-stream PDF embedded font (sfnt) at offset 0xD00A 4372 bytes
font_01_sfnt_off0000def8.bin
3c552c807ebf35e2ef3f849a2d465535670b065081ac88af92ddde4d3bad916a
pdf-font-stream PDF embedded font (sfnt) at offset 0xDEF8 11264 bytes
font_02_sfnt_off00010540.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x10540 4324 bytes