Malicious PDF — malware analysis report

Static analysis result for SHA-256 389e01d81758ad7a…

MALICIOUS

PDF

79.7 KB Created: 2021-02-22 00:51:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 1a08e07b96b6e640817123a3e585ca34 SHA-1: 92eba890c1d6b3b1d386904bf37d6513cc953b84 SHA-256: 389e01d81758ad7a8700053fe2f8e201f15ab8c477c96ed30e786237acee633a
156 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. 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-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.
  • 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://jacksth.ru/strik?utm_term=red+rising+book+6+2020 PDF link annotation
    • https://xaxaguxoludu.weebly.com/uploads/1/3/4/5/134519627/3821669.pdfIn PDF document text
    • http://bapuvefiliku.22web.org/25341434355.pdfIn PDF document text
    • https://lamixanusagexog.weebly.com/uploads/1/3/5/3/135317293/makadis.pdfIn PDF document text
    • https://zififawatef.weebly.com/uploads/1/3/4/3/134384507/vujitogumateti.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/rutufokedizon/rajifasededawupupi.pdfIn PDF document text
    • https://s3.amazonaws.com/degisapemifa/incident_response_plan_template_small_business.pdfIn PDF document text
    • http://bezofiwod.rf.gd/sabotixesekadanu.pdfIn PDF document text
    • https://s3.amazonaws.com/nevowimo/50039210213.pdfIn PDF document text
    • https://s3.amazonaws.com/tevomenil/the_lady_or_the_tiger_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/kefodek/polycom_user_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kelukakeb/straddle_option_strategy.pdfIn PDF document text
    • https://s3.amazonaws.com/jawusawar/bengal_tiger_movie_tamil_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/accounting_information_system_software_examples.pdfIn PDF document text
    • http://kilobawul.rf.gd/gitagemelifovalubulur.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/r_blend_sentences_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/xetasif/also_sprach_zarathustra_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/bufexa/67454200834.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_off0000fa8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA8C 5388 bytes
SHA-256: e868610feeecdf665e7048611813884f3fdf410fbb78f9f05ef8a8ba365dbbde
font_01_sfnt_off00010cfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CFC 10964 bytes
SHA-256: 8f28d1660a3a8de0be00c2df068289348b05f891f7989bad85b29905ecb2bf6f

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