Malicious PDF — malware analysis report

Static analysis result for SHA-256 89d1b0f2ad3987f2…

MALICIOUS

PDF

80.4 KB Created: 2021-04-14 15:57:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 09bdb8698ddde7303be0ae8b145b949c SHA-1: 27d3bbb71be017e1b65469de5d7fad51ca3cb245 SHA-256: 89d1b0f2ad3987f2bb38edf992c0fcd9477edf4f097975ddde13f5e0fffb8185
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 flagged as a phishing trojan. It contains an embedded URL that, when accessed, likely leads to the download of a secondary malicious payload. The document body, though heavily obfuscated, suggests a lure related to printer setup, aligning with a phishing or social engineering attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gimoguvi.ru/strik?utm_term=hp+laserjet+2100tn+network+setup PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4419423/normal_5fe4e22897be6.pdfIn PDF document text
    • https://cdn.sqhk.co/xejadukoxeta/gj0gBGK/retro_warehouse_preston.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385213/normal_5fcdf1e84dd76.pdfIn PDF document text
    • http://kosamaritaj.getenjoyment.net/48960560600.pdfIn PDF document text
    • https://cdn.sqhk.co/teduwugevoki/cjhfif2/zombie_hospital_game_2018.pdfIn PDF document text
    • http://kedugobepuged.mywebcommunity.org/what_size_needle_do_i_need_for_my_brother_sewing_machine.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464525/normal_5fdc7a2b6f849.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450502/normal_602fa5e843826.pdfIn PDF document text
    • http://vipadobotisituz.mygamesonline.org/34664788464.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367308/normal_5ff2f833e1956.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448545/normal_603ffe7becaf1.pdfIn PDF document text
    • https://cdn.sqhk.co/xagaxubibiz/rgcONjb/vuxuxiganazesawojo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413973/normal_606e7c4e7f3d2.pdfIn PDF document text
    • https://cdn.sqhk.co/zegofurop/bieiavf/mimobuletifumuxobelo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446034/normal_5ffe2865561e6.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/visagogijulep/98396442609.pdfIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/can_am_spyder_performance_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/bivodovogibusil.pdfIn PDF document text
    • https://s3.amazonaws.com/zexozavo/android_api_version_market_share.pdfIn PDF document text
    • https://s3.amazonaws.com/datarofapakil/project_action_plan_template_xls.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/jazuxaze.pdfIn PDF document text
    • https://s3.amazonaws.com/magapeguwabe/32093848795.pdfIn PDF document text
    • https://s3.amazonaws.com/natewared/how_to_build_a_bridge_with_toothpicks_and_marshmallows.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/castlevania_lords_of_shadow_ultimate_edition_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/tedaviderikanopekewop.pdfIn PDF document text
    • http://telusomabufa.onlinewebshop.net/central_bank_internet_banking_form.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_off0000fc3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC3C 5332 bytes
SHA-256: 325f187b08fcfdbfd4866c08ac6798d3d5fa7e960f2f28747f8f312b4d733ca1
font_01_sfnt_off00010e85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E85 10912 bytes
SHA-256: 7415bd8c4a622cd90648b08aa610d2699f0ad37e1884ed0925f5d5732958d09d

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