Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe5573ba8b7c897f…

MALICIOUS

PDF

72.9 KB Created: 2021-04-01 05:44:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: cfbfc27641fc73faaa491b04aa4e47ad SHA-1: 11c745a53ad71458c863bc469f1ad537b8118a51 SHA-256: fe5573ba8b7c897f64845599f23765053b86206bd8dc255aae7ef9a7ad5bb431
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 0.9993

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://ponafet.ru/strik?utm_term=how+do+i+track+a+priority+mail+package PDF link annotation
    • http://pivifemopore.22web.org/pubg_wallpaper_4k_hd.pdfIn PDF document text
    • http://zitarekatinupas.sportsontheweb.net/77877005755.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493195/normal_5fca6cc237377.pdfIn PDF document text
    • http://sexesex.site/zisesanubepowaguboreksatx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392661/normal_5fcdbd1c9e4f9.pdfIn PDF document text
    • http://tryraisins.pro/99930470144yimok.pdfIn PDF document text
    • http://goladelexugezi.sportsontheweb.net/26956766828.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448746/normal_605f1b9aa51cd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470218/normal_5fddfa860d658.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/sajatesawodiji/85703367299.pdfIn PDF document text
    • http://jaferojizewawer.epizy.com/timurekutokunap.pdfIn PDF document text
    • https://s3.amazonaws.com/potofaw/call_of_duty_1_100mb.pdfIn PDF document text
    • http://dafukip.myartsonline.com/zelosazewonurigigobe.pdfIn PDF document text
    • https://247e77cc-5367-4382-8586-7c5891409f42.filesusr.com/ugd/2dbf5a_e68d1d9b030341a098607a539066bfca.pdf?index=trueIn PDF document text
    • http://josuguremim.epizy.com/jamugatoronewixepijeb.pdfIn PDF document text
    • http://guseboses.atwebpages.com/75571970787.pdfIn PDF document text
    • https://s3.amazonaws.com/zodererezuzuxi/modal_verbs_exercises_advanced_with_answers.pdfIn PDF document text
    • http://mugoxox.epizy.com/quashing_of_fir_after_filing_chargesheet.pdfIn PDF document text
    • https://0cc2a7d0-6f33-4335-9ec9-554d9418487e.filesusr.com/ugd/cb4a18_19b1730b552e49598da17f3c5b40a9df.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/tuvabeneninevodijemene.pdfIn PDF document text
    • http://zezatavaveb.epizy.com/95976100726.pdfIn PDF document text
    • http://zowofiz.myartsonline.com/80896803096.pdfIn PDF document text
    • https://s3.amazonaws.com/xotomisen/ar_15_parts_schematic.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_off0000df8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF8C 5432 bytes
SHA-256: 42344ae9edc4b3926cc9d2e2e93fa982021847a0462b4e82ca0dffb3f545fcd2
font_01_sfnt_off0000f210.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF210 10504 bytes
SHA-256: b0bbd8c6a1f1e36c86ba0022373d55b2f606c6a020266e0d4a04210d7f02f464

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