PDF malware analysis — malicious · 94429d9abfad6aeb

MALICIOUS

PDF

92.9 KB Created: 2021-03-30 09:39:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23

MD5: 6ae9d302d93d24156b8c822d2e3fab7a SHA-1: 8cd28e21783c0cb9a51983d16464cf11287260c1 SHA-256: 94429d9abfad6aeb6eacd67494f36fa00a4513af1dab0901adee3e87e57e0c87

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9992

Heuristics 5

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 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://jottigo.ru/wix?keyword=6-4+study+guide+and+intervention+elimination+using+multiplication+answer+key PDF link annotation
- https://cdn.sqhk.co/podogule/xjbqggx/13986849160.pdfIn PDF document text
- http://nozumupi.medianewsonline.com/93644828933.pdfIn PDF document text
- https://cdn.sqhk.co/bopesajan/jhggifn/vast_tv_listings_rapid_city_sd.pdfIn PDF document text
- http://movawizaxaxato.mywebcommunity.org/cbse_class_12_biology_book.pdfIn PDF document text
- https://xovawezovikax.weebly.com/uploads/1/3/0/9/130969403/risopoxipiruz-jipakorokunag-fojol.pdfIn PDF document text
- https://cdn.sqhk.co/bogulevim/jghgYuO/definition_distribution_de_flyers_par_la_poste.pdfIn PDF document text
- https://jasasexu.weebly.com/uploads/1/3/1/1/131163864/visijaramom.pdfIn PDF document text
- https://sojanonef.weebly.com/uploads/1/3/0/9/130969598/tekonarog.pdfIn PDF document text
- https://jeroxesomob.weebly.com/uploads/1/3/4/5/134584548/nenuvatijiwofe-zujazupatewupe.pdfIn PDF document text
- https://nifonafepo.weebly.com/uploads/1/3/5/3/135319448/fusoginax_zituputuge_lixavavafezobi.pdfIn PDF document text
- https://romasipunup.weebly.com/uploads/1/3/2/6/132681769/nakepusebifatut.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://scripts.sil.orgThisIn PDF document text
- https://s3.amazonaws.com/takateg/indian_flag_photos.pdfIn PDF document text
- https://s3.amazonaws.com/setikizo/free_time_activities_printable_worksheets.pdfIn PDF document text
- http://lirolisol.epizy.com/eclipse_neon_4._6_for_windows.pdfIn PDF document text
- https://s3.amazonaws.com/xapidajovaji/cell_communication_worksheet_answer_key.pdfIn PDF document text
- http://fezilavitaj.epizy.com/24539912706.pdfIn PDF document text
- https://s3.amazonaws.com/seriposuj/wenaxowufis.pdfIn PDF document text
- https://s3.amazonaws.com/genukopapovixo/zabipivobugolinelad.pdfIn PDF document text
- http://kesewoge.rf.gd/tevibukusirazutegijafixud.pdfIn PDF document text
- http://sedobuxekazadi.rf.gd/57084087667.pdfIn PDF document text
- http://najekaweza.onlinewebshop.net/mutupebafaxa.pdfIn PDF document text
- http://kakapefetabol.rf.gd/poziburowutudixisuzefi.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://scripts.sil.org/In PDF document text
- http://scripts.sil.org/OFLAbyssinicaIn 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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000eed7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEED7	5888 bytes
SHA-256: `09503bd8dc9c234b88acd4ae97875c725bd64a29203745abe20b43bd13d47936`
`font_01_sfnt_off000102f7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x102F7	20992 bytes
SHA-256: `c4c455ee0e43fc3c0f8f268a2481cce22c6309bee7f84aa609423c70cc2763e9`
`font_02_sfnt_off00012333.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12333	13512 bytes
SHA-256: `e7312b66baf6a2e792592c4101c8f35005de0d50f145b9dd31807d706a7ed85c`
`font_03_sfnt_off00015024.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x15024	16092 bytes
SHA-256: `c14de85559d4b33d76026f6d9e3db52c4ed5e8525d58960fe0ba0e0ca9c0a166`

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