Malicious PDF — malware analysis report

Static analysis result for SHA-256 64cb3c4e2ccf837b…

MALICIOUS

PDF

120.0 KB Created: 2021-03-19 03:19:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d3fc622b96fe32a3be6bf365f30a319f SHA-1: ed30529c971c6e45c6365995ae556e008adf538e SHA-256: 64cb3c4e2ccf837b5594986dc2c71797776637446b38f8a8a249f6dbc458cf97
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. It contains a large number of external links, many of which are to PDF files, suggesting a link farm or redirection mechanism. The primary external URI points to a domain associated with phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and numerous external links indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://pelibifir.ru/aws?utm_term=how+does+detox+water+make+you+lose+weight
    • http://bijatutolime.iblogger.org/bible_trivia_questions_and_answers.pdf
    • https://cdn.sqhk.co/janezewufaj/igrMszl/mystery_word_puzzle_the_bill_of_rights.pdf
    • http://buwiguliri.iblogger.org/bivariate_exponential_distribution.pdf
    • https://cdn.sqhk.co/gixotagokezu/kgiNhjs/top_up_ff_di_dunia_games.pdf
    • https://cdn.sqhk.co/bojowagawire/PhhhiiN/ripibejalifiduzi.pdf
    • https://dipabuxirakilat.weebly.com/uploads/1/3/1/0/131071076/vazufodaxisem-rojisus-migeg-zekotedi.pdf
    • http://gikisivota.iblogger.org/43300198566.pdf
    • https://cdn.sqhk.co/nakizenonetu/aLhbggn/16985325032.pdf
    • http://sdfsdfsdf.shaketorch.com/naoh_hclo4_will_precipitate_form.pdf
    • https://tenekitu.weebly.com/uploads/1/3/4/0/134018212/3798186f8113.pdf
    • https://cdn.sqhk.co/dagozuwemep/WxAjyja/chores_in_this_house.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://c1cb471f-fc5c-4ef2-b3e1-4d0d0d09d135.filesusr.com/ugd/cc5b41_09221e211c2f4c858d273c0403c2dbc4.pdf?index=true
    • https://d45380bd-a93d-4ef2-b2bd-4c7806d1f6db.filesusr.com/ugd/5d2cf3_6f224b8ace6c487fa15eee64a1888b62.pdf?index=true
    • https://4e33067b-0f13-4bed-bb9c-ea95f768fd7c.filesusr.com/ugd/23924c_4ef7d858352347af8fe8fea1cf6a0ac7.pdf?index=true
    • https://s3.amazonaws.com/zasepo/11020295857.pdf
    • https://7c5e2310-e79b-429e-9f4a-70471a43dcce.filesusr.com/ugd/8ec1ef_739eebc019ee4323972fb79b80596243.pdf?index=true
    • https://s3.amazonaws.com/gaxuremewuger/angular_formgroupname_ngfor.pdf
    • https://s3.amazonaws.com/leteraxewe/que_es_una_imagen_corporativa.pdf
    • https://acfc0e76-311d-46af-9c13-f46c112eb424.filesusr.com/ugd/f90bad_7d5a95cedf4748339a7e60bfd422abbc.pdf?index=true
    • 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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000173e0.bin
0293037ccb366965dd942c210f6b4b465cc88a557fc250a5e81b568756fead12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x173E0 5304 bytes
font_01_sfnt_off00018604.bin
af48e20663d793e76fdf15e84f04a6514c16240f3c843ae01983eb64472b81da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18604 11624 bytes
font_02_sfnt_off0001ad8e.bin
f3b95f1269985bafc3dfb9b5b35e76df8a4d57039a143c013aed99c7cf3a4a89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1AD8E 16344 bytes
font_03_sfnt_off0001c307.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1C307 4324 bytes

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