PDF malware analysis — malicious · 6b8454905c6a2a5d

MALICIOUS

PDF

80.4 KB Created: 2021-04-05 01:27:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14

MD5: 2f00dbf830834b59a9cf716af203dc1e SHA-1: 9689be3c739b9d59ce14b4cb5cd35bee984531a3 SHA-256: 6b8454905c6a2a5d78bb2c8437038b65f056b9fc73c180d7d7ae650abb2e5bd8

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, appears to be a lure related to a 'Garmin 920xt user manual pdf'. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 6

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 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.
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://maypoin.ru/strik?utm_term=garmin+920xt+user+manual+pdf PDF link annotation
- https://cdn.sqhk.co/xotosira/GrsjhiG/kosoxujokis.pdfIn PDF document text
- https://gelupolo.weebly.com/uploads/1/3/5/3/135314506/4a94f88.pdfIn PDF document text
- https://kizujaxaluw.weebly.com/uploads/1/3/4/3/134393650/1869290.pdfIn PDF document text
- https://dijovenop.weebly.com/uploads/1/3/4/7/134705939/muxinekituloma.pdfIn PDF document text
- https://cdn.sqhk.co/zuboxizip/D5ghL7w/dormir_preterite_forms.pdfIn PDF document text
- https://basurujilitafap.weebly.com/uploads/1/3/4/5/134595952/livekofige.pdfIn PDF document text
- https://jufasoxoko.weebly.com/uploads/1/3/5/3/135315704/juxani-rekusama-samalimamo-dudewo.pdfIn PDF document text
- https://cdn.sqhk.co/xenekifa/ibjaogd/f1_schedule_2016_japan_espn.pdfIn PDF document text
- https://zajolapa.weebly.com/uploads/1/3/0/7/130776493/2592716.pdfIn PDF document text
- https://fezagigix.weebly.com/uploads/1/3/0/8/130813643/4495194.pdfIn PDF document text
- https://cdn.sqhk.co/ketusugedi/fqjiqhd/10692248996.pdfIn PDF document text
- https://cdn.sqhk.co/gufojakig/jbjjif2/super_slime_soccer_unblocked_download.pdfIn PDF document text
- https://zamuwute.weebly.com/uploads/1/3/0/9/130969683/ritojovagukuxidu.pdfIn PDF document text
- https://tazesarazuf.weebly.com/uploads/1/3/4/7/134726557/pinija_xesexonipovowod_xorozafibu.pdfIn PDF document text
- https://zipatusuf.weebly.com/uploads/1/3/4/0/134012633/6990124.pdfIn PDF document text
- https://mabunamu.weebly.com/uploads/1/3/4/9/134902385/memabaguwonujebam.pdfIn PDF document text
- https://suzexefovewav.weebly.com/uploads/1/3/4/6/134640410/laboze-wobuxowubu.pdfIn PDF document text
- https://radinake.weebly.com/uploads/1/3/1/8/131856095/xipiv_xoguloras_punufadupafokip.pdfIn PDF document text
- https://xevefozivoro.weebly.com/uploads/1/3/5/3/135339272/ribulolubixiro.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In 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_off0000ed6f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xED6F	5488 bytes
SHA-256: `bcca1fd4d9f78e1a2d7febc671201a226bc8e62cda7f4fc0a45c429f33ef60dd`
`font_01_sfnt_off00010000.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10000	10808 bytes
SHA-256: `f4862fdaaf9c0b9cc8151506b8dea522aa81ad336d6e66abfa0fe183921e13d3`
`font_02_sfnt_off000124c7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x124C7	4324 bytes
SHA-256: `1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e`

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