Malicious PDF — malware analysis report

Static analysis result for SHA-256 060e5876d700fd27…

MALICIOUS

PDF

74.2 KB Created: 2021-03-16 19:46:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 0003cbf0503ea5a952b030e6dabbffa6 SHA-1: b098ecd19ca561611f9d500fd96c5e984a5bfc12 SHA-256: 060e5876d700fd2786816ccc222f0518bfef6e11c2dc6be9773e72277c479f5e
186 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 0.9996

Heuristics 6

  • 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.
  • 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://xajibur.ru/strik?utm_term=what+is+a+parallel+plot+structure PDF link annotation
    • https://pawonojureva.weebly.com/uploads/1/3/4/5/134522231/3838620.pdfIn PDF document text
    • https://zupevojug.weebly.com/uploads/1/3/0/7/130740492/5873297.pdfIn PDF document text
    • https://gapotijaj.weebly.com/uploads/1/3/1/3/131383657/4632096.pdfIn PDF document text
    • http://kavuxusexilu.22web.org/19571793662.pdfIn PDF document text
    • https://zuxusesomopekem.weebly.com/uploads/1/3/5/3/135305840/47ea5c7c215699f.pdfIn PDF document text
    • https://feketofemij.weebly.com/uploads/1/3/1/4/131452988/5372526.pdfIn PDF document text
    • https://cdn.sqhk.co/puwipaneke/hfmhdgh/27335631222.pdfIn PDF document text
    • http://pawelemofub.iblogger.org/tp_link_powerline_extender_wifi_not_working.pdfIn PDF document text
    • https://kowagazobavov.weebly.com/uploads/1/3/0/8/130874359/1510633.pdfIn PDF document text
    • https://cdn.sqhk.co/naziwixolagu/ckieAgh/auto_follow_hashtag_instagram.pdfIn PDF document text
    • https://nowesepi.weebly.com/uploads/1/3/1/1/131164229/5916933.pdfIn PDF document text
    • https://cdn.sqhk.co/lazujanaziri/gihdgig/63981906900.pdfIn PDF document text
    • https://vimedapajabapi.weebly.com/uploads/1/3/5/3/135309909/goriz-puden-xofilulil-mirawala.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1663e9ec-2b95-4e19-bf61-412f16fa4012/fundamental_analysis_example.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/812529ad-f77a-4aef-876b-ff347e81d9b3/where_is_the_filter_on_my_goodman_furnace.pdfIn PDF document text
    • http://zuwosopawekaz.rf.gd/line_graph_template_excel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c8f8aa4-78c0-4350-9dbe-3f6a93a0d278/what_does_pum_mean_on_instagram.pdfIn PDF document text
    • http://jigikox.rf.gd/zotajoxedoxuzitofev.pdfIn PDF document text
    • http://zanulewetadom.epizy.com/winchester_model_12_slam_fire.pdfIn PDF document text
    • http://zazujipediwa.rf.gd/84039461664.pdfIn PDF document text
    • http://nosirewelavof.epizy.com/lukaluvirugir.pdfIn PDF document text
    • http://pumukozozuzife.epizy.com/most_accurate_powder_for_reloading_6.5_creedmoor.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_off0000e4f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4F8 5032 bytes
SHA-256: 6614fc4fe7941779e81f7ae186b37d7a07f3817e4fead39ef8528863b26132a4
font_01_sfnt_off0000f61f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF61F 10456 bytes
SHA-256: 2eef1806640fc0b51178c3a05d02c683487ab94e7d81269282e83c6664687b49

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