Malicious PDF — malware analysis report

Static analysis result for SHA-256 32193625dae0d1ff…

MALICIOUS

PDF

69.0 KB Created: 2021-03-28 02:30:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e13cb3e76175f25dc83cc3b2ebc1f56d SHA-1: b6a2ca0644a81290f6acd9dbffa5199d06499d58 SHA-256: 32193625dae0d1ff2709e868f985499c5c60ce95df48f3bb99a2f22aefcdf76d
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a PDF_SEO_LINK_FARM heuristic, pointing to various domains. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically phishing. While no scripts were directly extracted, the PDF structure and numerous URLs suggest it's designed to redirect users to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/wix?keyword=agario+hack+server+play
    • http://jigikujed.scienceontheweb.net/depexozerin.pdf
    • http://marafonsport.site/how_to_edit_adobe_acrobat_reader_dck5hxl.pdf
    • http://bukejasinopa.22web.org/buffalo_wings_and_rings_franchise_information.pdf
    • http://fitokaps.xyz/vikugufwwtza.pdf
    • http://bekokax.getenjoyment.net/74846692726.pdf
    • https://getenulezawo.weebly.com/uploads/1/3/4/8/134897364/tofikuso.pdf
    • https://zeduxuvanoripi.weebly.com/uploads/1/3/0/7/130775880/gapij.pdf
    • http://segaruzobuguses.scienceontheweb.net/oil_producing_countries_in_africa.pdf
    • https://nupewaxupojiga.weebly.com/uploads/1/3/4/0/134042887/mapukunaves.pdf
    • https://bebekibuxa.weebly.com/uploads/1/3/5/9/135993907/wevupekowetepafifa.pdf
    • http://huseyincanx.com/bits_pilani_mca_formi7gyn.pdf
    • http://uscarinsurance.info/how_to_put_music_on_ipod_touch_2nd_generationupcvy.pdf
    • http://todayshop.website/ladenusaniyrc37.pdf
    • https://nododekevage.weebly.com/uploads/1/3/4/7/134733794/difenozapagejowona.pdf
    • http://kudusakepupa.sportsontheweb.net/dd_players_handbook_cover_art.pdf
    • https://fifusikusivupe.weebly.com/uploads/1/3/4/6/134638905/8798925.pdf
    • https://pukadove.weebly.com/uploads/1/3/4/6/134694451/51e56df29470.pdf
    • http://reweder.site/telizowalisekf0mk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gurutimikef.epizy.com/zudulirofaramuvinu.pdf
    • 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_off0000c9a7.bin
d545b77a456a5342340a4f339970c1b70006d4b60a3ce38f657501ff99139acf
pdf-font-stream PDF embedded font (sfnt) at offset 0xC9A7 5408 bytes
font_01_sfnt_off0000dc1b.bin
5fba05e8a1b7ab9e424cc0ec65ce3ae26d51f982a664709509b7c2a5323d93be
pdf-font-stream PDF embedded font (sfnt) at offset 0xDC1B 12772 bytes