Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c6a0d26cb5307f7…

MALICIOUS

PDF

83.5 KB Created: 2021-05-01 11:11:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9bd463cfa75c42e2e10900f5feb56c38 SHA-1: aba8120db0d52087b3f360ec3476e136c3e73b77 SHA-256: 2c6a0d26cb5307f78bccce54aa1429fdd6f83049e494e4c718d4c5749124f90a
156 Risk Score

Malware Insights

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

The PDF document contains numerous external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing attempt. The ML classifier and ClamAV detection strongly indicate maliciousness. While no scripts were explicitly extracted, the presence of external URIs and the nature of the heuristics point towards a malicious document, likely intended to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=what+are+the+elements+of+form+in+music
    • https://fenuligor.weebly.com/uploads/1/3/2/6/132695430/7057600.pdf
    • https://wavurujubatebar.weebly.com/uploads/1/3/2/6/132682053/583e8b2f6.pdf
    • https://dofemavuxowag.weebly.com/uploads/1/3/0/7/130739836/7926730.pdf
    • https://motedozanegiraz.weebly.com/uploads/1/3/1/3/131383309/soxejubuwatumuganine.pdf
    • https://cdn.sqhk.co/libavesonon/jW0gfRN/dbz_battle_of_gods_arc.pdf
    • https://cdn.sqhk.co/noneniwetav/Ohcieij/36579814643.pdf
    • https://bivejeweki.weebly.com/uploads/1/3/4/3/134322338/9119709.pdf
    • https://cdn.sqhk.co/jaziwuke/agiEorA/39310766246.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/sixolose/boxujisokujot.pdf
    • https://d670dda7-df53-4ef1-8eda-d3256df28744.filesusr.com/ugd/dbbbec_569b12bdf6604f52b27e43f808250119.pdf?index=true
    • http://wetowudokik.epizy.com/3_binomische_formel_berechnen.pdf
    • https://s3.amazonaws.com/vokeri/the_story_of_arthur_truluv_book_review.pdf
    • https://7fe1f042-206b-4735-a408-f56337efeeb4.filesusr.com/ugd/d34b51_c2fae61c03c5457fa08fd1986db7bf0c.pdf?index=true
    • http://meganisaniwo.rf.gd/66526700841.pdf
    • http://kopivenegi.epizy.com/15532434426.pdf
    • https://c9b0c9dc-51ad-46ec-84b2-dbc26df53712.filesusr.com/ugd/b6f588_a3222de2d8894ebe8425222e49d118f6.pdf?index=true
    • https://77da94c0-0f0a-445b-87af-e489a0b5ef66.filesusr.com/ugd/db1da1_c8ddd29c8c294e9ea8c35356d22b9c26.pdf?index=true
    • https://ff4d9611-e7ea-45f2-85d3-f0b464ef817f.filesusr.com/ugd/48f461_1d2834bf59dc4937a48c49affac650dc.pdf?index=true
    • https://f6142301-0c02-44dd-b2c5-62cf9b3cd0dc.filesusr.com/ugd/ebfdba_34528573bdfa492dadc2b01556a8fba6.pdf?index=true
    • https://s3.amazonaws.com/mesotodimus/nimafomanebemelobexaluse.pdf
    • https://f77c8dad-41d7-4a8f-8d8d-c05149a3a236.filesusr.com/ugd/36d413_f9fa45bf5f784cb9952529b15523b4aa.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000109f8.bin
edb6cc97e579fcf71b4b94acf65aef9429424fadc5943d6bf39d7b3dd78bc4a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x109F8 5136 bytes
font_01_sfnt_off00011b4f.bin
808ec49aa7fdd6c87f5895aa646ee1cb02eb6a1d2e1f44a4a6153ddcc2f87588		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11B4F 10888 bytes

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