Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dde0a98494a5448…

MALICIOUS

PDF

79.0 KB Created: 2021-04-01 20:17:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 988b465af548b5dc7407030eb371cf9e SHA-1: 3c27d241ab448563f0de796ca8f0e1a67efd2cf8 SHA-256: 2dde0a98494a54485bea203f41c9b06a16211fb23adc9680562c25c6ae708da5
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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://midufefew.ru/wix?keyword=maldito+karma+pdf+gratis+online PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4469623/normal_5fc6d670cc7b1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374196/normal_5fcddd0428f2f.pdfIn PDF document text
    • https://cdn.sqhk.co/zisuxemop/fPghxjc/world_poker_tour_pinball_machine.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402486/normal_5fcf93bf732d2.pdfIn PDF document text
    • https://cdn.sqhk.co/gemukojev/zghDdgg/gipera.pdfIn PDF document text
    • http://tulotipokumubo.iblogger.org/cement_manufacturing_project_report.pdfIn PDF document text
    • http://jomexozuwin.22web.org/29200672256.pdfIn PDF document text
    • https://cdn.sqhk.co/kivipemo/hhjdhid/43068504625.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458621/normal_6007be6940ae0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://5e6d3f51-9b35-4a29-baf4-1f036254a461.filesusr.com/ugd/99a8f2_92138699f51344e5b1b26821ff2d3b13.pdf?index=trueIn PDF document text
    • https://a3c73713-be4b-4c8d-a01f-dab92ecb4e1a.filesusr.com/ugd/5df860_63da39135aad4add9fb1e28f8c61cdcc.pdf?index=trueIn PDF document text
    • http://xemigososefof.atwebpages.com/star_wars_aftermath_la_fine_dell_impero.pdfIn PDF document text
    • https://a4346b84-4611-49ab-b113-80c9188ca613.filesusr.com/ugd/078c79_13b489878103451a94e2fb8129814f41.pdf?index=trueIn PDF document text
    • https://64b67c6e-fbbd-4787-add8-9ed3e274c95c.filesusr.com/ugd/eb6612_9697343a77784d28b9f5e0f61ca359f4.pdf?index=trueIn PDF document text
    • http://lelesajik.epizy.com/epson_perfection_v370_photo_specifications.pdfIn PDF document text
    • http://zutugidod.onlinewebshop.net/gina_asthma_2020.pdfIn PDF document text
    • https://69df74eb-9f83-488d-97bb-abb55063df61.filesusr.com/ugd/f34323_09d0f654e55b4d5c97fb3b965a49923c.pdf?index=trueIn PDF document text
    • https://53f03ce6-db0b-4f41-9bfc-6956ba41e1f4.filesusr.com/ugd/727e0f_f4f77714553a471e843c9c3a5942b3e3.pdf?index=trueIn PDF document text
    • https://979cd01f-16ea-4d2c-b189-234964c95597.filesusr.com/ugd/d4c4cf_a04483b8d3df483eb44447aba9ca9510.pdf?index=trueIn PDF document text
    • https://580b68e3-2104-4118-ae5b-4f285de1c062.filesusr.com/ugd/dad7b5_104a0ec3d0f04a9b9f0145bcb1561446.pdf?index=trueIn PDF document text
    • http://nasedelowose.rf.gd/62899788343.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f433.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF433 5432 bytes
SHA-256: aff100f3bc2e260fa00afffbb1d50e18ea5b588d2dd0f84c20e30bd3f6e54c7e
font_01_sfnt_off000106a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106A6 11988 bytes
SHA-256: ecc3cd0c5af0e19895eab8686628f2c7fe1471f68d7c1c78f47dc04a82ec7855

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