PDF malware analysis — malicious · 529d5e95a6b495c9

MALICIOUS

PDF

80.6 KB Created: 2021-03-16 01:10:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20

MD5: a7356cd066105dfde3567113075bc106 SHA-1: a05232ede62365dd09462c758482587b0a31abfa SHA-256: 529d5e95a6b495c9588ae91d1ad9805ef18fcde8043799b89e45b24e21cb8f5b

196 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, with one heuristic specifically identifying a large link farm. The 'SE_MFA_LURE' heuristic indicates the document is designed to harvest credentials or session tokens by mimicking MFA prompts. The presence of external URIs and the ML classifier's high confidence score support the assessment of malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9990

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.
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
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://ponafet.ru/strik?utm_term=toshiba+voicemail+reset+code PDF link annotation
- http://malalij.iblogger.org/what_causes_a_dryer_to_keep_shutting_off.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367656/normal_60256089bf876.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4459320/normal_6013ca15a4b9d.pdfIn PDF document text
- https://pubogovivewata.weebly.com/uploads/1/3/2/3/132302724/f12f8f603cb.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366993/normal_6016696dcf174.pdfIn PDF document text
- https://xalumalalo.weebly.com/uploads/1/3/4/7/134766869/fojorefefu.pdfIn PDF document text
- http://rikumoturukeju.iblogger.org/zurojojosegowowuliguviz.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4494433/normal_604a56ac767db.pdfIn PDF document text
- https://dedemapisiwopiv.weebly.com/uploads/1/3/0/7/130775251/nibegaxiwexakatozano.pdfIn PDF document text
- https://nozojotama.weebly.com/uploads/1/3/4/5/134585139/e428e.pdfIn PDF document text
- http://kiwenalod.medianewsonline.com/super_mario_bros_2_walkthrough_3ds.pdfIn PDF document text
- http://xitawefavam.medianewsonline.com/40335459210.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4470540/normal_5fe24fc6023c6.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/tikoweravisixu/zuvetitijodofaruwazebof.pdfIn PDF document text
- http://fafezevasuba.rf.gd/windwalker_monk_gear_guide.pdfIn PDF document text
- https://s3.amazonaws.com/zolerazowubow/edipo_rey_resumen_largo.pdfIn PDF document text
- http://zosatomoviwom.rf.gd/jiposalipede.pdfIn PDF document text
- https://s3.amazonaws.com/wurivuve/dell_optiplex_9020_sff_desktop_computer_i7-4790.pdfIn PDF document text
- http://bigapenegig.atwebpages.com/lasanej.pdfIn PDF document text
- https://s3.amazonaws.com/xupovobejanam/cetoacidosis_diabetica_ada_2009.pdfIn PDF document text
- https://s3.amazonaws.com/kopisigapub/85222130405.pdfIn PDF document text
- https://s3.amazonaws.com/nelizenejakarug/aov_server_taiwan_patch_indonesia.pdfIn PDF document text
- https://s3.amazonaws.com/vekodupiwarobi/ketupuxanote.pdfIn PDF document text
- https://s3.amazonaws.com/xelimewat/cat_in_the_hat_costume_girl.pdfIn PDF document text
- https://s3.amazonaws.com/vazisi/teoria_causalista_del_derecho_penal.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e442.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE442	5328 bytes
SHA-256: `c0bac90c685cf5018441f82412b2f56c39f37375b42ccd672168f28debdf3b62`
`font_01_sfnt_off0000f636.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF636	11588 bytes
SHA-256: `73d7ad639f0393d840bf25e011562ab54430f06bff3b34104eca7d845cbab24f`
`font_02_sfnt_off00011da1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11DA1	16112 bytes
SHA-256: `da133098c8ec00180ce5fe37c74b807b143adc5860869a2f7b6211e455203b10`

Open this report in the interactive analyzer, or submit your own file for analysis.