Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c268b363f72f09e…

MALICIOUS

PDF

83.2 KB Created: 2021-03-07 20:44:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 620d6fe86749c37e96276fa151ab2143 SHA-1: f7296b460b8787472fe4e58a6c8e48714774cdf2 SHA-256: 6c268b363f72f09e5ac2b8d8543a6071125fa6fd4709bf3e937f6fbbbacda50a
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9997

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 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://pelibifir.ru/strik?utm_term=how+to+get+a+vendor%2527s+license+in+georgia PDF link annotation
    • http://kojazunupetip.mygamesonline.org/is_saying_fine_rude.pdfIn PDF document text
    • https://cdn.sqhk.co/perikowep/4jhEWDm/liropategope.pdfIn PDF document text
    • https://denuxikunoleluj.weebly.com/uploads/1/3/4/0/134018299/nexokux.pdfIn PDF document text
    • http://xufamorazogubov.sportsontheweb.net/motevizidem.pdfIn PDF document text
    • https://cdn.sqhk.co/bevurokakug/gitiaYE/60409407438.pdfIn PDF document text
    • http://miraluvofizobe.medianewsonline.com/is_my_fitbit_flex_2_waterproof.pdfIn PDF document text
    • https://mirijanonukuzo.weebly.com/uploads/1/3/2/7/132740352/f0dc3869ae30.pdfIn PDF document text
    • https://betoxugibujimiv.weebly.com/uploads/1/3/1/0/131071043/vubufef.pdfIn PDF document text
    • https://melinifijegor.weebly.com/uploads/1/3/4/2/134265386/9754013.pdfIn PDF document text
    • https://rinuwunebod.weebly.com/uploads/1/3/4/7/134750090/gavis-femivevawakakop-padumip.pdfIn PDF document text
    • https://cdn.sqhk.co/tinolefowi/hghHjjn/busy_accounting_software_free_for_mac.pdfIn PDF document text
    • https://cdn.sqhk.co/vopofuxo/dcwhffw/zobapakorolu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://garafukaralefa.epizy.com/arduino_nano_datasheet_v3._0.pdfIn PDF document text
    • http://lukafimagog.atwebpages.com/nubuna.pdfIn PDF document text
    • http://koxolavomuzo.myartsonline.com/how_to_reset_first_alert_alarm_system.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56c85bc0-1123-4336-91b3-51c1fe8730a3/xofutuzebuner.pdfIn PDF document text
    • http://pulutugorivexek.atwebpages.com/zunipike.pdfIn PDF document text
    • http://xosareregaka.epizy.com/kilipu.pdfIn PDF document text
    • http://viwuwijagabote.myartsonline.com/moluxudigot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5f4cff3-6041-4be4-b17d-bef1d10e280b/50587219776.pdfIn PDF document text
    • http://mimogovudefo.rf.gd/apostrophe_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71cfa146-b86b-4e10-baa8-4eb6dd0a6701/cant_wont_dont_stop.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_off00010923.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10923 5256 bytes
SHA-256: 7aa108464659ffc030ba6f056af952e3645661263353c10a2b9712c97e2d852a
font_01_sfnt_off00011b32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B32 10612 bytes
SHA-256: f483f8045a80b79b48ca5b94635494dd635f6a2d9a596a6a0be474c6b242f283

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