Malicious PDF — malware analysis report

Static analysis result for SHA-256 95d231f2d93db543…

MALICIOUS

PDF

80.9 KB Created: 2021-03-27 10:11:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 56c5308bdc28347cea8774b72522258a SHA-1: 81638e1f3d5473f2e90abc26c177ebc0c9df7b2a SHA-256: 95d231f2d93db543028f9df5f4b2f962e272866cfb984ebc75c2302639445086
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs, many of which are hosted on disposable domains and appear to be part of a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to design resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://dugedepap.ru/123?utm_term=business+card+design+illustrator+file+free PDF link annotation
    • http://movizopolu.medianewsonline.com/97250632275.pdfIn PDF document text
    • https://runogobikekeg.weebly.com/uploads/1/3/5/3/135350887/8384170.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465259/normal_6032181eb4cf5.pdfIn PDF document text
    • https://ximabetewu.weebly.com/uploads/1/3/1/3/131384229/d1387f026.pdfIn PDF document text
    • http://gopadaxin.mywebcommunity.org/dupoxabonorepefag.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410965/normal_6047fd949a57e.pdfIn PDF document text
    • http://majivevugi.22web.org/golav.pdfIn PDF document text
    • https://povizizumor.weebly.com/uploads/1/3/4/6/134636509/4549d11.pdfIn PDF document text
    • https://nozezekotelipub.weebly.com/uploads/1/3/4/8/134883262/xagawizukikenen-zoxumefajen.pdfIn PDF document text
    • http://tedurelaseji.mygamesonline.org/zokaxazosixewe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xewenofos.epizy.com/69606762052.pdfIn PDF document text
    • http://guminol.epizy.com/bestiario_mitologia_griega.pdfIn PDF document text
    • https://s3.amazonaws.com/fasomusogapovi/i_want_a_wife_judy_brady_irony.pdfIn PDF document text
    • https://s3.amazonaws.com/kulinisokakewi/simple_basketball_plays_for_third_graders.pdfIn PDF document text
    • https://cccd2283-d272-450a-840b-6541230ebad2.filesusr.com/ugd/5de1df_63234cdfa2c8470ebd0bc48c6e490dd3.pdf?index=trueIn PDF document text
    • http://pakewon.rf.gd/kigupuvozajorugitutuwepo.pdfIn PDF document text
    • https://de99934f-f465-4d69-af5e-14f317c0a7c6.filesusr.com/ugd/4fea5c_eac1e146bf5b4fefaaa3e154d4356fc0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pafiganovavi/wotufijus.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/kifikudu.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_off0000fc70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC70 5240 bytes
SHA-256: 6812124fe45f2b412f9175b5403b5246f3ec6641afc3f1d496701d28c9615de7
font_01_sfnt_off00010e55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E55 12064 bytes
SHA-256: 677c80ad86848bd9418a278df2e77e1f795602e858a376343f17067cdf1e8432

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