Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f3fd68a2b7b61ee…

MALICIOUS

PDF

89.1 KB Created: 2021-06-01 02:13:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 7da509570e811c49d1e01f75acb465e6 SHA-1: cbb4300a3bed6c9daa852d109cdf0360850b0888 SHA-256: 8f3fd68a2b7b61eee07d7e310fa76d1b4af83c2d6621417b976b433a9928c320
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many hosted on disposable domains, which is characteristic of a link farm designed to drive traffic. The embedded URL and the document body suggest a lure for downloading applications, specifically mentioning 'sniper gun 3d hitman shooter mod apk download'. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://medvor.ru/pbw?utm_term=sniper+gun+3d+hitman+shooter+mod+apk+download PDF link annotation
    • https://bogogumufen.weebly.com/uploads/1/3/4/0/134018830/worige.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455898/normal_6021d90a8d0dc.pdfIn PDF document text
    • https://lufosafol.weebly.com/uploads/1/3/0/7/130775677/meduxi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389616/normal_5ff3728367cc5.pdfIn PDF document text
    • https://bejixetixozivi.weebly.com/uploads/1/3/4/4/134499198/patadixipidov.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4454965/normal_60afee5883657.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4490918/normal_60b083e85ca46.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385012/normal_5ffb2f545b62e.pdfIn PDF document text
    • https://kagifinozadobet.weebly.com/uploads/1/3/4/9/134902547/601223855e5d8.pdfIn PDF document text
    • https://satizivuzaked.weebly.com/uploads/1/3/4/3/134383512/8307403.pdfIn PDF document text
    • https://temazerezeveleg.weebly.com/uploads/1/3/4/7/134763385/db3c3b38f3.pdfIn PDF document text
    • https://kekoluborefox.weebly.com/uploads/1/3/5/3/135327445/756d69a9340b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481527/normal_6024beed11f31.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446782/normal_60492db532a3c.pdfIn PDF document text
    • https://sozetodu.weebly.com/uploads/1/3/4/2/134265488/zuxevuwekerinolara.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409113/normal_60620b4604567.pdfIn PDF document text
    • https://zavetogodafewer.weebly.com/uploads/1/3/4/7/134709275/1018fbd806b7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zepadatoju.pbworks.com/f/902421808.pdfIn PDF document text
    • http://zexowisam.pbworks.com/f/9_snf_almanca_kitab_cevap_anahtar.pdfIn PDF document text
    • http://gazumadu.pbworks.com/f/dulugabavobilesamum.pdfIn PDF document text
    • http://paderukut.pbworks.com/f/bewafa_hai_tu_dj_song_download_mp3tau.pdfIn PDF document text
    • http://paderukut.pbworks.com/f/30466169700.pdfIn PDF document text
    • http://niwomif.pbworks.com/w/file/fetch/144420726/d_pharmacy_mcq_questions_and_answers_download.pdfIn PDF document text
    • http://veweran.pbworks.com/f/alcatel_firmware_one_touch_upgrade_download_tool_version_s_4.2.7.pdfIn PDF document text
    • http://kapetipubi.pbworks.com/w/file/fetch/144426765/world_coin_price_guide.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8DA 3924 bytes
SHA-256: bd6f4a62b6c164c14e866654eb59f92f51725c5aaedd670b867daef904fed449
font_01_sfnt_off0000f6e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6E2 5796 bytes
SHA-256: 969acd772706cc8a53f791400d4d1dc0bcebb4dd819961617c23763e36e5a205
font_02_sfnt_off00010a81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A81 19164 bytes
SHA-256: c3782679d50d283cf3c0181f1ce97745829dd0fbe5dc0140098984bbc9af3acb
font_03_sfnt_off00013c62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C62 16656 bytes
SHA-256: d2382e3b5548332eec7ac0da884adebf0402fd4567352782b6489c33169efc99

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