Malicious PDF — malware analysis report

Static analysis result for SHA-256 60d87d8b56b6d09e…

MALICIOUS

PDF

70.4 KB Created: 2020-11-10 18:42:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 296d9bd543886facae03facf6c070fa4 SHA-1: d807172929e758af2adc6e15edfd3fc4cc2f673b SHA-256: 60d87d8b56b6d09ed6eda002a7e52ea0ab60e58eec19556d514998f663098b1a
156 Risk Score
Tags
free-cdn-ebook-manual-lure

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. 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 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 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.
  • 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://traffking.ru/123?keyword=online+mii+maker+tool PDF link annotation
    • https://tazomisoz.weebly.com/uploads/1/3/4/3/134344853/0a266a51.pdfIn PDF document text
    • https://ralututoj.weebly.com/uploads/1/3/4/4/134457658/rosesove_tevep.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/fajonubinomeder/sojasisekafufa.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/genebadopisuxorobex.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/68221855172.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/74551384160.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b68b2554-c368-463a-8f2c-9b6545c48304/no_taxation_without_representation_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/fisher_paykel_dishwasher_repair_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/19639795441.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/estados_financieros_bajo_niif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a14ccb1e-61bd-4efe-95c6-59773d9c94f8/notiwumagowadurajudob.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/turtle_beach_ear_force_tango_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/41936273203.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a622f990-008b-44d2-a25b-1adc52f870aa/63944563302.pdfIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/bevumunu.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_off0000d77f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD77F 4744 bytes
SHA-256: e23541b1da23df21616a62e774daf2c274b36010a928e7e81e0fd4dbe6f62432
font_01_sfnt_off0000e787.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE787 10968 bytes
SHA-256: 5624ac068ce4eeec1149f09ebd6b5f2e44fc16e603c46514f3648099ef76d04b

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