PDF malware analysis — malicious · 3e777b4fc7123aa5

MALICIOUS

PDF

87.6 KB Created: 2021-02-13 04:47:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26

MD5: 6c9c908ab9e291ff5783455c94e1ed85 SHA-1: b3fe9deca7022fbb6e5149a8735cb760817acb0f SHA-256: 3e777b4fc7123aa50d78a1d862001c8430b5192326443264b03a16f70ba15fef

166 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript T1555.003 Credentials from Password Stores

This PDF document was flagged as malicious by ML classifiers and ClamAV, indicating a phishing lure. The heuristic 'SE_MFA_LURE' strongly suggests the document is designed to harvest credentials by mimicking a multi-factor authentication or one-time code confirmation page. The presence of numerous external URIs, many hosted on disposable domains, further supports a phishing campaign. No scripts were extracted, but the document's structure and heuristics point to a credential harvesting attack.

Machine Learning

Nyx PDF Classifier malicious score 0.9990

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
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://jacksth.ru/wix?keyword=sorceress+gear+guide+bdo PDF link annotation
- http://copyright-notice-ig.com/345172478100b00y.pdfIn PDF document text
- https://semanipiji.weebly.com/uploads/1/3/5/3/135312460/9e8df0c.pdfIn PDF document text
- https://cdn.sqhk.co/xaripisi/hjshbj6/35348519506.pdfIn PDF document text
- http://itrom.fun/29581103333ellk5.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4377101/normal_5fc88af876ecc.pdfIn PDF document text
- http://all-casino.xyz/bajosaba08af1.pdfIn PDF document text
- https://cdn.sqhk.co/fulaxanew/jeKfEFa/towubenegepedigiso.pdfIn PDF document text
- https://cdn.sqhk.co/runenuti/Ov9LheH/gym_exercise_training_plan.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4502464/normal_60084139896c6.pdfIn PDF document text
- http://trafikcezaodebayisi.com/19632110527a0cvt.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4449172/normal_601e502bbd026.pdfIn PDF document text
- http://dk-inc.xyz/bapalisawadabovaiud0.pdfIn PDF document text
- https://dirotazu.weebly.com/uploads/1/3/1/0/131070105/jenogujon.pdfIn PDF document text
- http://free-at.pro/3391789715fp4xt.pdfIn PDF document text
- https://cdn.sqhk.co/wadusazilox/8jf0ggM/how_to_kick_soccer_ball_higher.pdfIn PDF document text
- https://rasuzumiketasak.weebly.com/uploads/1/3/4/3/134393825/b613db5425fdce7.pdfIn PDF document text
- https://divetuguwopad.weebly.com/uploads/1/3/0/7/130739619/8341402.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4473384/normal_5fff034dccefc.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/purixifusipelid/harbor_breeze_ceiling_fan_user_manual.pdfIn PDF document text
- https://s3.amazonaws.com/gewisetug/94593608105.pdfIn PDF document text
- https://s3.amazonaws.com/kefodek/goretelogi.pdfIn PDF document text
- https://s3.amazonaws.com/tarajix/parachute_linen_sheets_amazon.pdfIn PDF document text
- https://s3.amazonaws.com/jevelel/kuwonaka.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00011040.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11040	5316 bytes
SHA-256: `cf72f14a125d158540063393e2ebc5139b71a47a759511a34e7658ab74405198`
`font_01_sfnt_off00012254.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12254	1800 bytes
SHA-256: `daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e`
`font_02_sfnt_off00012ae2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12AE2	11044 bytes
SHA-256: `eafadfb632eaefd3b98d73f39c314290f7272e1bc70adde85c279841023a46df`

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