PDF malware analysis — malicious · 9c1a2759c16c4a39

MALICIOUS

PDF

73.1 KB Created: 2021-05-05 22:46:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 3e14e5032c6bc082c24ae64f3cb34706 SHA-1: 60ca72019d4f2221d4ce3fd9575a31f32f2c9bca SHA-256: 9c1a2759c16c4a3996ff7e17360881c1a0c589a52fb5f71961bdfd821efbf225

266 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript T1539 Steal or Forge Credentials T1534 Steal or Forge Session Tokens

This PDF document is flagged as malicious by ML classifiers and ClamAV, indicating a phishing attempt. Heuristics indicate it's a lure for MFA/one-time-code harvesting and recovery secret theft, likely to steal credentials or session tokens. The embedded URLs point to domains associated with phishing infrastructure.

Machine Learning

Nyx PDF Classifier malicious score 0.9991

Heuristics 8

Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE

Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE

Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
MFA / one-time-code harvesting lure high SE_MFA_LURE

Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
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://leonvi.ru/strik?utm_term=couldn%2527t+find+google+account+but+username+is+taken
- https://jabukosiw.weebly.com/uploads/1/3/0/8/130874379/2394512.pdf
- https://cdn.sqhk.co/zavoragive/cAC9Jie/knocking_boots_line_dance_step_sheet.pdf
- https://cdn-cms.f-static.net/uploads/4417997/normal_600bc2d3068ea.pdf
- https://static.s123-cdn-static.com/uploads/4370071/normal_5fdd5ce43db17.pdf
- https://kapibazagazibu.weebly.com/uploads/1/3/5/3/135347450/vugere.pdf
- https://cdn.sqhk.co/bikakigiben/lVggbig/cooking_fever_pc_game_download.pdf
- https://cdn.sqhk.co/gojelonub/hgZqhju/how_to_play_pyramid_solitaire_windows_10.pdf
- https://talipugetajizan.weebly.com/uploads/1/3/4/8/134862074/7881243.pdf
- https://cdn.sqhk.co/vasozaponem/VjgpGTV/89460772379.pdf
- https://duzigolanulemo.weebly.com/uploads/1/3/2/6/132680867/1216609.pdf
- https://static.s123-cdn-static.com/uploads/4451549/normal_5fc639bd31583.pdf
- https://letazofuwukuge.weebly.com/uploads/1/3/4/8/134869061/1538101.pdf
- https://lumitagejul.weebly.com/uploads/1/3/4/8/134887152/7146771.pdf
- https://namevixezevir.weebly.com/uploads/1/3/0/9/130969021/fegoxejigurugu.pdf
- https://buzijivugaza.weebly.com/uploads/1/3/4/7/134709386/9a2041a1f9b2859.pdf
- https://cdn.sqhk.co/vabalogu/bicheNF/fox_deportes_xfinity_channel_number.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/vonusirukete/android_games_with_controller_support_list.pdf
- https://uploads.strikinglycdn.com/files/39c5c4ce-9e75-41b7-9045-9b2522420802/monster_vs_aliens_show.pdf
- https://uploads.strikinglycdn.com/files/54243da5-71d6-4e21-a0b6-720063019bac/64955250615.pdf
- https://uploads.strikinglycdn.com/files/7470b486-7038-40c0-a162-c8cba048fefd/58500852278.pdf
- https://s3.amazonaws.com/bidemewufa/sports_illustrated_swimsuit_cover_photos.pdf
- https://s3.amazonaws.com/megelugik/tirijoko.pdf
- https://uploads.strikinglycdn.com/files/08277f48-4c61-4a66-a2b1-0a3a619148b2/subozupesilorizazudekodu.pdf
- https://s3.amazonaws.com/posufij/miborakakaxiritipaj.pdf
- https://uploads.strikinglycdn.com/files/153a3d9a-83d1-49fe-a582-e27d179a6fd8/33394730737.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e224.bin` `3ca1443992145f9fbc70080362f2a5f649255839a433b3a31f97df07adfdd107`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE224	5484 bytes
`font_01_sfnt_off0000f4bc.bin` `f4a3e119ec278d9b48fc565f01bfa6c4d190d4f2bae05b0e9e2b02663b7a972c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF4BC	9932 bytes

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