Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e83a3ce937e91f3…

MALICIOUS

PDF

77.5 KB Created: 2021-03-26 05:54:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ad5f12be194d7cdf26e91528a240f38c SHA-1: 519ff95c30b2a9855a7dd4853ca1632a2374e23e SHA-256: 2e83a3ce937e91f3c420a3473879ed85fc3d4d76ee46721c923d0bfd302b7f3b
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by ML classifiers and ClamAV as malicious. The document body, though heavily obfuscated, appears to be a lure related to product manuals, aiming to trick users into visiting the malicious URL. No scripts were extracted, but the presence of external URIs and the ML/ClamAV detections strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://soxebez.ru/wix?keyword=proform+manual+elliptical
    • http://dress-russia.ru/the_smith-corona_floating_shift_typewriter_repair_biblehot70.pdf
    • https://static.s123-cdn-static.com/uploads/4494165/normal_5fdedc8a40846.pdf
    • http://tadigewatogonun.22web.org/english_language_video_songs.pdf
    • http://likedizar.medianewsonline.com/netgear_wnr3500lv2_review.pdf
    • https://static.s123-cdn-static.com/uploads/4495849/normal_5fcd0e3f40a5b.pdf
    • http://1offpark.xyz/61714710795duk6k.pdf
    • http://lnstagramlivesupportcenter.com/funevotehhigx.pdf
    • http://nabavawuzafurur.mygamesonline.org/bbc_6_minutes_english_podcast.pdf
    • http://nezowigivomi.scienceontheweb.net/hp_laserjet_p2035_printer_datasheet.pdf
    • https://cdn-cms.f-static.net/uploads/4421333/normal_601a45851313b.pdf
    • https://static.s123-cdn-static.com/uploads/4450907/normal_5ffd6be6be3b3.pdf
    • https://static.s123-cdn-static.com/uploads/4479932/normal_5ff668f04845b.pdf
    • https://cdn-cms.f-static.net/uploads/4490920/normal_603a4a7d95e90.pdf
    • https://static.s123-cdn-static.com/uploads/4370746/normal_5fe18c82ec6c1.pdf
    • https://cdn-cms.f-static.net/uploads/4482191/normal_605544d9aea03.pdf
    • http://tisibodonal.22web.org/vekubalitadip.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://959e49da-b405-4961-97d4-5c1bb2e9a628.filesusr.com/ugd/ab0441_7073bce36f0a4a0c93dae388201f7003.pdf?index=true
    • http://rowomikaxanuga.rf.gd/sesetojosapamibiduragegi.pdf
    • https://36425c1f-c329-48aa-845d-1f8252cb45c8.filesusr.com/ugd/01d500_4a21f4f66dfb4a7dad59799921b7c4e4.pdf?index=true
    • http://vuxibir.rf.gd/sugegoduwo.pdf
    • https://d7504aae-3d37-493f-8789-a5629a6fcc30.filesusr.com/ugd/7ca9f5_ef7277e563cc4ef4a372f551eb04205d.pdf?index=true
    • https://f8b2de7a-6012-4721-b8f1-df5267d6bb95.filesusr.com/ugd/8ebb60_c1972743bc454a72bdd9c4b5774e5b5a.pdf?index=true
    • http://zodumokosijupe.epizy.com/what_does_ou_mean_in_optometry.pdf
    • https://d4180a97-8dd0-4bf1-9e2f-d1b128d1a64d.filesusr.com/ugd/ae059d_0eb711ad596149bda290c8cbef57bfcd.pdf?index=true
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2fa.bin
45ab6b95135282f1e920ab1d62bb47f23b7b5b8d56be1f8a9ee83eb1766e3fe7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF2FA 4984 bytes
font_01_sfnt_off000103d5.bin
b72609a14f6d4045e39a42f6781e8792de239a01bba552aef3485ca50e4398c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x103D5 10776 bytes

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