Malicious PDF — malware analysis report

Static analysis result for SHA-256 70b89d34f9034692…

MALICIOUS

PDF

61.1 KB Created: 2021-01-11 14:57:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d786c40a308cdab6d4ee7f36bce78a95 SHA-1: 7d02d97cee7128778638c2eb2c9cb322a158ec33 SHA-256: 70b89d34f90346926ae22860dc85c2180cea85bc08219835cb2ec8fd4a2f59ac
124 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which are hosted on disposable domains and appear to be part of a link farm. The document body, though heavily obfuscated, contains text related to movie downloads, suggesting a lure to entice users to click on these malicious links. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7485

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • 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://traffset.ru/aws?utm_term=chamatkar+full+movie+free++mp4
    • https://site-1175580.mozfiles.com/files/1175580/daxonetezoviratimo.pdf
    • https://juwujumatel.weebly.com/uploads/1/3/4/0/134042908/1fd3616a5.pdf
    • https://cdn.sqhk.co/lasotepana/fhcyihe/wevajetexajero.pdf
    • https://cdn-cms.f-static.net/uploads/4426279/normal_5fc1dbc7f2441.pdf
    • https://kavirozix.weebly.com/uploads/1/3/3/9/133999962/3ce656e756.pdf
    • https://site-1177496.mozfiles.com/files/1177496/rebuild_of_evangelion_1__0_sub_espanol.pdf
    • https://katopogovalasa.weebly.com/uploads/1/3/5/4/135401177/gejeso_pafevavudoninol_xaxudojavidiman_jinupajexexada.pdf
    • https://site-1174259.mozfiles.com/files/1174259/5433795270.pdf
    • https://cdn.sqhk.co/gurukemopuge/ImigzLb/gigokaled.pdf
    • https://site-1168233.mozfiles.com/files/1168233/baby_names_that_start_with_ka.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/faluzotixupi/losofisemix.pdf
    • https://s3.amazonaws.com/megulu/5359791401.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c158.bin
d05c9df0074ccf5c8f5c5e88561b33d2e1bfad02ed1412e65440664cbde505c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC158 5080 bytes
font_01_sfnt_off0000d27d.bin
2d9e420481b7becfa3ea1ec64afbf405c291a2150251aacb76773455ce7922f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD27D 11200 bytes

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