Malicious PDF — malware analysis report

Static analysis result for SHA-256 80f974d2c689982a…

MALICIOUS

PDF

119.6 KB Created: 2021-03-28 16:27:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 74769cc1b761bd074408bd599956757a SHA-1: 67089d73627522102ad2a020e4474637c5746e35 SHA-256: 80f974d2c689982aefec18e93bae3ab6a838eb479ec1ff6b1a21763a1841ddce
196 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a password-protected-archive lure. 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 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://golowaki.ru/wix?keyword=extraccion+del+petroleo PDF link annotation
    • http://3-bureaureport.info/the_missing_411_the_hunted_documentaryfz08j.pdfIn PDF document text
    • http://agentsecure.space/what_are_the_characteristics_of_liberalism_brainlyjtnx9.pdfIn PDF document text
    • http://0fruit.space/43909665262cen5n.pdfIn PDF document text
    • http://limaxinsto.xyz/42254681365in5qy.pdfIn PDF document text
    • http://tublitalia.fun/68948229485psoha.pdfIn PDF document text
    • http://afracheat9.xyz/37685072180685yg.pdfIn PDF document text
    • http://olymp-trade.top/27897455461mag0k.pdfIn PDF document text
    • http://lnstagramcopyrightmanagement.com/9523919002tjhw7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/26664884969.pdfIn PDF document text
    • https://s3.amazonaws.com/pivetuzadujo/bmtc_bus_routes_and_numbers_platform.pdfIn PDF document text
    • https://ed21222e-fee3-4fab-8b52-e2ddb7bb35ab.filesusr.com/ugd/e73fea_351935a3b1144663becbd550208d1588.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pavujiniz/streaming_app_android_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tomamujuf/81062332380.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/cobian_backup_user_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/nuselufuzo/zogomil.pdfIn PDF document text
    • http://gikutixutawax.epizy.com/kajazebuwa.pdfIn PDF document text
    • http://nixuverojezuluz.epizy.com/weladekiko.pdfIn PDF document text
    • https://8dfdba76-182f-4dc4-9dda-37a8c8d09dc9.filesusr.com/ugd/4ae4db_93d3278b0d6645588b016289f4c7c19f.pdf?index=trueIn PDF document text
    • http://masuroti.rf.gd/zaxufagajijujejuzonimus.pdfIn PDF document text
    • https://s3.amazonaws.com/salade/34855288529.pdfIn PDF document text
    • http://pewaxoxepizus.rf.gd/93298586965.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00019061.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19061 4912 bytes
SHA-256: 1775893cd062f7e61bc44cfaf3be79aaa4a11a655710ecb887f938b88c607256
font_01_sfnt_off0001a129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A129 14532 bytes
SHA-256: 6c8dbac1da806185e4beac3c8e436362bbc9e2062db1aaff9247e59fb7421737

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