Malicious PDF — malware analysis report

Static analysis result for SHA-256 08e61944e779b851…

MALICIOUS

PDF

87.7 KB Created: 2021-01-21 01:12:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 0551f88615f0ae23c3c91093b2b1b758 SHA-1: e7c704a5c7a3c5780f8b10a045539726db0cbd80 SHA-256: 08e61944e779b85173ce592a721330636d0a54bf9f30b59e54d4187fbff9783c
146 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and is flagged by ClamAV as Pdf.Phishing.Trojan. The ML classifier also strongly indicates maliciousness. The primary URL, 'https://trafffi.ru/wb?keyword=carx%20drift%20racing%202%20hack%20ios%202019', suggests a lure related to game hacks, aiming to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://trafffi.ru/wb?keyword=carx%20drift%20racing%202%20hack%20ios%202019 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4453327/normal_5fdf8102d0515.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401515/normal_5fd77ca01efcb.pdfIn PDF document text
    • http://manoligixave.66ghz.com/sotezajuso.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453098/normal_5fba978e181c9.pdfIn PDF document text
    • https://site-1214259.mozfiles.com/files/1214259/sepajuvefizidix.pdfIn PDF document text
    • https://site-1175310.mozfiles.com/files/1175310/bodugelabazi.pdfIn PDF document text
    • https://site-1177351.mozfiles.com/files/1177351/nufoben.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476765/normal_5fd78d3295310.pdfIn PDF document text
    • https://site-1168148.mozfiles.com/files/1168148/pubaxejafaxun.pdfIn PDF document text
    • https://site-1168501.mozfiles.com/files/1168501/paripatas.pdfIn PDF document text
    • https://mghacks.org/carx-drift-racing-2/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wovigebi/90716100853.pdfIn PDF document text
    • http://kitasiru.epizy.com/android_auto_bmw_i3.pdfIn PDF document text
    • http://mujuvuxi.epizy.com/xetovufezebubibazefuxis.pdfIn PDF document text
    • http://kupikobu.epizy.com/sqlite_in_android_using_kotlin.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/97547412795.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eac0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC0 5768 bytes
SHA-256: 3159fb24b148797b1c27812ce24f22e5673bc3d498b6496fd79b034b604cd749
font_01_sfnt_off0000fe5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE5E 5556 bytes
SHA-256: 1dbe00c746f6f4706cc39679c6b4c42b61300053d25feee7b2a0ec5474f30410
font_02_sfnt_off0001123a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1123A 11280 bytes
SHA-256: 8266251fa7124dc6eb582d590cd559a927fc0c953fa7e7fdf85bfb1176123c6d
font_03_sfnt_off000138dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138DD 16904 bytes
SHA-256: d5820413054f7aaf03bdc3753e4871e7711578a18c044c2c65430c5a4019fbef

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