Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c1c6cd72c5efae6…

MALICIOUS

PDF

74.7 KB Created: 2021-03-01 09:24:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 100bf06b444554a7ad323718e6dbfb80 SHA-1: 6584e9b10e54e19db2e328cf4d6cc5de291cfeb2 SHA-256: 7c1c6cd72c5efae6445246a9e6ccdfb6cbbe6b6ec465d0ffeb75113d000fefb8
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs and exhibits characteristics of a link farm on disposable hosting, strongly suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection further corroborate its malicious nature. While no scripts were explicitly extracted, the PDF structure and embedded URIs indicate it is designed to redirect users to malicious sites, likely for further payload delivery or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://soxebez.ru/wix?keyword=exploring+psychology+11th+edition+myers+pdf+free PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4459164/normal_5fc93e2ca5baa.pdfIn PDF document text
    • http://mevilesiroxivo.iblogger.org/watolawamapenekarexu.pdfIn PDF document text
    • http://kewegagibemidaj.22web.org/sheeted_basalt_dikes.pdfIn PDF document text
    • https://cdn.sqhk.co/miviluwulux/jb5Lhgj/mejijudoxi.pdfIn PDF document text
    • https://cdn.sqhk.co/tilafukefuwe/Aifgjos/84489321.pdfIn PDF document text
    • http://jalatuxu.iblogger.org/3750209711.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451227/normal_603c84676b44a.pdfIn PDF document text
    • http://tejifepubodol.iblogger.org/50736796417.pdfIn PDF document text
    • https://cdn.sqhk.co/bidekidarub/hdhbLhb/easy_recipe_for_german_chocolate_cake_frosting.pdfIn PDF document text
    • https://milonotupilo.weebly.com/uploads/1/3/5/3/135347339/bujop.pdfIn PDF document text
    • http://xofajenakimexo.iblogger.org/pangya_golf_android.pdfIn PDF document text
    • http://goodshopsales.xyz/what_to_eat_on_warrior_dieto07ad.pdfIn PDF document text
    • https://falizuzu.weebly.com/uploads/1/3/4/5/134506804/7271465.pdfIn PDF document text
    • http://emirofficialzm.com/6228829966mo7m0.pdfIn PDF document text
    • https://cdn.sqhk.co/kavonalitego/ivrjfgg/tapedi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459025/normal_600ee6fe07a58.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pupovedifa.rf.gd/desigual_shoes_size_guide.pdfIn PDF document text
    • http://jonuvavito.epizy.com/lodefawarid.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_off0000e629.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE629 5536 bytes
SHA-256: 8b804d8ee3c1008e2f510e57e22b130d6a80a427026f70bb6e484465954baed2
font_01_sfnt_off0000f8f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F2 10528 bytes
SHA-256: bf5499cb891f63d74f311868ddcc00d300142b2fd92aa9a1b3bef96d9a92e199

Open this report in the interactive analyzer, or submit your own file for analysis.