Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0aebda162ac20d8…

MALICIOUS

PDF

77.6 KB Created: 2021-03-10 16:12:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 00f2bceb9a83a9ef2df87cba26f0da2a SHA-1: 352866ec17dd63b99ec13a42ba180640ac1ff81e SHA-256: c0aebda162ac20d8371cd025f52ceedb72c52e4232dfe50d587235e10a18902e
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV detecting it as a phishing trojan. The document contains a large number of external links, many pointing to disposable domains and link farms, suggesting a phishing or SEO scam. The embedded URLs likely lead to malicious content or further phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://mezovuduw.ru/award?keyword=isometric+drawing+symbols+pdf PDF link annotation
    • http://instas.site/65297223287gqxna.pdfIn PDF document text
    • https://boforotove.weebly.com/uploads/1/3/5/3/135393238/2dceb593ec.pdfIn PDF document text
    • https://viwosexoteb.weebly.com/uploads/1/3/4/6/134631328/vares.pdfIn PDF document text
    • https://muwegejise.weebly.com/uploads/1/3/4/2/134265646/mulinotarebuso.pdfIn PDF document text
    • https://xezamojukugenu.weebly.com/uploads/1/3/5/3/135316948/logederanelorodorad.pdfIn PDF document text
    • https://jamekefexufi.weebly.com/uploads/1/3/4/8/134866820/bedotoguna-filiwisu-motowagalapux-nepimuga.pdfIn PDF document text
    • https://vumerajijo.weebly.com/uploads/1/3/2/8/132815742/b5d3af.pdfIn PDF document text
    • https://tigibivimibi.weebly.com/uploads/1/3/4/3/134344299/9e95690.pdfIn PDF document text
    • https://zukodefikarux.weebly.com/uploads/1/3/4/4/134498552/xavareb.pdfIn PDF document text
    • https://cdn.sqhk.co/vakolitakap/eogdvXu/pixinabozumavox.pdfIn PDF document text
    • http://onenature.space/97660844332rx0n5.pdfIn PDF document text
    • http://lumacy.site/aha_music_apk2tyhw.pdfIn PDF document text
    • https://cdn.sqhk.co/nejisakatok/gehbrUV/wotilurusakubiwimijuxug.pdfIn PDF document text
    • https://cdn.sqhk.co/norowitidot/ggibXa4/51320958938.pdfIn PDF document text
    • https://cdn.sqhk.co/lukulobu/jibBLjh/hashtags_for_instagram_facebook_twitter_like_application.pdfIn PDF document text
    • https://cdn.sqhk.co/kugefiruxat/jh6Uica/naruto_x_boruto_ninja_voltage_para_pc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jiwoxofor.rf.gd/charleston_county_inmate_information.pdfIn PDF document text
    • https://9e269ae7-c3cf-4b9f-bde2-1d9be064b7bf.filesusr.com/ugd/139869_25d589916bc147a0884e928de9d34b58.pdf?index=trueIn PDF document text
    • http://rozogev.rf.gd/saeco_magic_de_luxe_bedienungsanleitung_deutsch.pdfIn PDF document text
    • http://lumajenav.epizy.com/22542303029.pdfIn PDF document text
    • https://03aaa7dd-6608-466c-a68c-f41c59811c05.filesusr.com/ugd/ae15ca_47f207717ef54646bb671a6512dff29f.pdf?index=trueIn PDF document text
    • https://b54663a3-ff9d-4122-b75c-69b71428c9b0.filesusr.com/ugd/cfa91a_9e227f67a14d4db7998e96d4f3cf646a.pdf?index=trueIn PDF document text
    • http://suxanovovogemi.rf.gd/59307899811.pdfIn PDF document text
    • http://wezinetukuxemim.rf.gd/woodworking_basics_crossword_puzzle_answers.pdfIn PDF document text
    • https://f87ce62f-3d5d-4c42-bff3-2e7d00444551.filesusr.com/ugd/72ed28_65447cac66b44579bb6109aeea015597.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f11c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF11C 5744 bytes
SHA-256: 7cf20e20cfe8d6c1c460407fed4a905f8c521d1b3633d51a7115625732c3450a
font_01_sfnt_off000104a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104A8 10712 bytes
SHA-256: a90a350029ade59337e22cf64740ff05b4405880a158daadd4dfb6c6a7e97754