Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c09f54775c76674…

MALICIOUS

PDF

87.1 KB Created: 2021-03-28 02:07:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: acd59e6b57e78a3019379d73a8320d4d SHA-1: f11c828b6aea38aad1fda10a0dcb53c87124b06c SHA-256: 5c09f54775c76674c29d76c6df28f0a74cd3d2332b0de713f957ae657174a498
186 Risk Score

Malware Insights

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

This PDF file is identified as malicious by ClamAV and ML classifiers, indicating a phishing or trojan threat. It functions as a link farm, presenting numerous external links under the guise of search results for free PDF downloads, with the primary lure being 'full bhagavad gita in marathi pdf free download'. The PDF contains embedded URLs and is structured to direct users to potentially harmful content hosted on disposable domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://druttle.ru/award?keyword=full+bhagavad+gita+in+marathi+pdf+free+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4413455/normal_600360bbeae2f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417429/normal_60183115b9b66.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380079/normal_604d5b49722dc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4531523/normal_600093198c86b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://95a83a18-022f-4aa5-9dc2-588eac4c5c4a.filesusr.com/ugd/ccb6ab_8b809128f48543768812530380821f6e.pdf?index=trueIn PDF document text
    • https://bd7a0a6f-bbfd-49cc-ba41-c3f2778102d9.filesusr.com/ugd/9ea91e_abb8e56bf11c44f6b3de54d07d47182f.pdf?index=trueIn PDF document text
    • https://85fc0914-20e3-4f1c-be8c-de7e6f89f47e.filesusr.com/ugd/a44510_108cb812900c436b929e36effeb6c755.pdf?index=trueIn PDF document text
    • https://34570882-574e-4d25-8c0e-d8b9b6c2967f.filesusr.com/ugd/cb2bed_1966d74c8da243e7a4de0f8b914cf74f.pdf?index=trueIn PDF document text
    • https://43e3b293-20b6-4b74-9f7d-0eefffb4d2df.filesusr.com/ugd/11595e_f27cdcf010d94965a7209ebb5fd4c011.pdf?index=trueIn PDF document text
    • https://0b670cc3-d94b-4117-8b98-7ce677fb6c21.filesusr.com/ugd/7bc559_e4c5fc36330e4419b358e405b3ac17b5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/donarepemi/alien_covenant_movie_free.pdfIn PDF document text
    • https://51f47fa2-20f7-4ec4-bb91-8ae4aee689b4.filesusr.com/ugd/917232_12e2c3de610747fb95a62673d6714d8a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/miledu/what_is_gauss_law_formula.pdfIn PDF document text
    • https://d75bbb92-b0e4-4b50-83e6-2443e695523b.filesusr.com/ugd/bc73b9_eb86fb7bb8b24f5994ae6c6a68975d46.pdf?index=trueIn PDF document text
    • https://6a8c3f3f-5248-4e80-80e0-4bf2c04f72bc.filesusr.com/ugd/8b2c09_0b19a3cb130d446cb496babadc684da8.pdf?index=trueIn PDF document text
    • https://ae26bae5-b1f3-4fb2-a0ba-5d2f2d23988c.filesusr.com/ugd/aec2ea_d3bbc3dcf4f94c54975a57269f04c6b4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/how_to_use_lux_1500_thermostat.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/mini_dv_camcorder_manual.pdfIn PDF document text
    • https://ba85394b-11ac-4ca4-926b-74ca936c52e1.filesusr.com/ugd/5ccfc8_9a4a9401012e4a3d9222cf944fd26e5c.pdf?index=trueIn PDF document text
    • https://1f2f8e77-98df-4c5e-b88a-83bc2b612b58.filesusr.com/ugd/5c7528_2380ed832d7241afacc170b56e0105ac.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F2 5524 bytes
SHA-256: 063399c1f844a4d7106da199964e7e8f39f08918b0099e864ca0f575134e9974
font_01_sfnt_off00010ba3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BA3 11480 bytes
SHA-256: d7584e867dc3e6fe6df374d2655bc8480d71b0fa27df4c4ff696f840b247eacd
font_02_sfnt_off00013202.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13202 7708 bytes
SHA-256: 5919f2d50785ed7cccb662dac01d857c90f47f7f9c1a0b7803eea1638a957fd5

Open this report in the interactive analyzer, or submit your own file for analysis.