Malicious PDF — malware analysis report

Static analysis result for SHA-256 249c015cbd81c45a…

MALICIOUS

PDF

77.7 KB Created: 2021-03-06 03:35:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0b99a03c47c5f52dbc76f14ac7167c44 SHA-1: 11b332dbb3d102e6e11931baf3bd2457968e2edb SHA-256: 249c015cbd81c45a44ddb34a129077b4114a1cc37911d309d5c6a91335c77f99
164 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains numerous external links, including a link farm hosted on weebly.com, suggesting an attempt to redirect users to potentially harmful content. The document body, though heavily obfuscated, contains keywords related to 'Thermo king parts uk', likely serving as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ponafet.ru/aws?utm_term=thermo+king+parts+uk
    • https://wesoxiworikezux.weebly.com/uploads/1/3/1/3/131380467/593821.pdf
    • https://cdn-cms.f-static.net/uploads/4461786/normal_6010f6f9acfbc.pdf
    • https://mojoranazo.weebly.com/uploads/1/3/4/4/134403481/wubenijefomaxo-gadalipesupiw.pdf
    • https://wanevowak.weebly.com/uploads/1/3/4/4/134465130/repekokepe_fixanu_wajimubosufu_merabuboxupe.pdf
    • https://static.s123-cdn-static.com/uploads/4393016/normal_5fc82919edaba.pdf
    • http://extra-fon.ru/sivake3zaba.pdf
    • https://nobakavukip.weebly.com/uploads/1/3/4/3/134373074/sizuxezamesaxokote.pdf
    • http://mesretly.xyz/ipad_mini_5_price_in_india_32gb8pn3n.pdf
    • https://cdn-cms.f-static.net/uploads/4479905/normal_60357774eec4f.pdf
    • http://lightly.store/data_science_course_salary_in_india81dt7.pdf
    • https://static.s123-cdn-static.com/uploads/4417221/normal_5ff818a882c11.pdf
    • https://static.s123-cdn-static.com/uploads/4371003/normal_5ff772c0a4a6a.pdf
    • https://cdn-cms.f-static.net/uploads/4469370/normal_602301965738f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/6536c5be-fd83-424f-91bc-967377cbb10a/poxovawizadezazoret.pdf
    • https://uploads.strikinglycdn.com/files/f554ba9a-8e40-4914-af69-0adb9bc72e27/minn_kota_trolling_motor_mounting_block.pdf
    • https://uploads.strikinglycdn.com/files/7ba97e6e-2bd3-4007-87c3-e1848efafc14/9874361646.pdf
    • https://uploads.strikinglycdn.com/files/ddc15db4-8ebc-435e-8f51-41a2942080eb/34982274799.pdf
    • https://uploads.strikinglycdn.com/files/3978544a-098a-4be4-9f00-a896111e3a11/89746941908.pdf
    • https://uploads.strikinglycdn.com/files/e5c59716-1208-4e96-b8e3-c2eb01e80af4/charles_atlas_video_artist.pdf
    • https://uploads.strikinglycdn.com/files/383316ab-1cd2-4a79-b8da-7cb86b055a6c/zelarukigen.pdf
    • https://uploads.strikinglycdn.com/files/5d7de31d-7012-4fb4-bf78-5b4c71aa36e4/interview_questions_for_technical_support_engineer.pdf
    • https://uploads.strikinglycdn.com/files/de10180e-059d-46c2-9a3f-2a1ad69dda63/do_bomb_pops_have_gluten.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_off0000f166.bin
9f26d3a120f0917464c993a4626120421f10e043b6bd9cd47182216bba07c91e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF166 5216 bytes
font_01_sfnt_off000102fc.bin
64f7721f7f179f7efdbe6e2a37af0ffed0c56faa383baaab6e7b8021b0acf0aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x102FC 11248 bytes

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