Malicious PDF — malware analysis report

Static analysis result for SHA-256 177cd12858096129…

MALICIOUS

PDF

80.6 KB Created: 2021-03-25 16:03:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b779284b56eef813c417cbc30c99bf0 SHA-1: 971f5c1bdeaacf1d18a15c34d37392f748716d69 SHA-256: 177cd1285809612938bcc2b9caa8dac4f6ef1624f30a4e8cccf2e04a8f97a76c
96 Risk Score

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 identified as a phishing trojan. It contains an embedded URI pointing to 'bologen.ru', which is likely part of the phishing lure. The document body, though heavily obfuscated, contains keywords related to 'warframe tips and tricks' and the wkhtmltopdf application, suggesting a social engineering pretext to drive users to the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://bologen.ru/wix?keyword=warframe+tips+and+tricks
    • https://cdn-cms.f-static.net/uploads/4391623/normal_600f154a9379d.pdf
    • http://my-credit.info/how_to_setup_hp_deskjet_2620styze.pdf
    • http://xonitaj.mywebcommunity.org/70929639505.pdf
    • https://static.s123-cdn-static.com/uploads/4384647/normal_5ff52e7d2ced8.pdf
    • http://visiblawty.com/kung_fu_hustle_full_movie_hindi_mp4yq9sn.pdf
    • https://static.s123-cdn-static.com/uploads/4409616/normal_6000ecce01ec8.pdf
    • http://xtrading.buzz/how_to_learn_agile_methodologyg8nrc.pdf
    • https://cdn-cms.f-static.net/uploads/4416671/normal_6027c42da1f6a.pdf
    • https://static.s123-cdn-static.com/uploads/4450636/normal_5ff7c01d1e050.pdf
    • http://masito.space/how_to_audition_for_the_new_percy_jackson_series7vnls.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gorajikunobixi/good_wife_season_2_episode_guide.pdf
    • https://84d51d8d-5932-465a-b044-5d36dace581c.filesusr.com/ugd/98e2de_bea9f9903e18402f8ee6e3895bc0c8f4.pdf?index=true
    • https://f92484db-e5b4-41f8-9431-508412042773.filesusr.com/ugd/b04c15_4cac98b2d3fa41f1bdb918fbf20b0d07.pdf?index=true
    • https://s3.amazonaws.com/werowibovezoje/gawain_5_suriin_natin_answers.pdf
    • https://s3.amazonaws.com/luramamelolem/how_to_set_up_fleck_5600sxt.pdf
    • https://f0f855fd-29d2-4bf6-9fdd-af1de8d1f91d.filesusr.com/ugd/184831_40b0818c3d4a4a64bd5f40d7ff392dec.pdf?index=true
    • https://da9d63b4-fbfd-4f6f-88e7-06ac0d76355b.filesusr.com/ugd/ca300b_0baccb4b49384e93b7f05205c524ffba.pdf?index=true
    • https://s3.amazonaws.com/gazitif/c_dictionary_trygetvalue_vs_containskey_performance.pdf
    • http://josuxak.atwebpages.com/24602247598.pdf
    • http://fugufaza.myartsonline.com/cub_cadet_ltx_1045_weight.pdf
    • https://2df7536a-ab64-4dd3-a6ca-98e0eca144a4.filesusr.com/ugd/de578f_eb624b5978be4afa8be4ff08689bd55a.pdf?index=true
    • http://pexirud.onlinewebshop.net/67319268504.pdf
    • https://s3.amazonaws.com/paxuvagal/livogegetelu.pdf
    • http://noroved.myartsonline.com/becoming_human_jean_vanier.pdf
    • 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_off0000fdcc.bin
02a54c2ca356948313fa099196837be9d866d2bf9c4203d657e2b091a0e87484		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFDCC 5344 bytes
font_01_sfnt_off00010ff8.bin
e1056fa2410fa499b60f90edef427073d4d4e39793980704ce622c79a561b8a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10FF8 10944 bytes

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