PDF malware analysis — malicious · 350cec3d875a7dfc

MALICIOUS

PDF

90.6 KB Created: 2021-03-15 16:17:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27

MD5: e4e351b1a75cd671be30e1ef6096a240 SHA-1: fb38c7e66f976e0ecc2142ee9b40456d05f2c801 SHA-256: 350cec3d875a7dfcdaeaee22baa3152f68b9c5b8ce43249c1cfcd96a86d4b1b0

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 pointing to disposable domains, suggesting a link farm or SEO spam operation. The document body, though heavily obfuscated, contains a reference to a recipe, likely a lure to disguise the malicious intent of directing users to potentially harmful websites.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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
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://jottigo.ru/strik?utm_term=char+broil+big+easy+turkey+rub+recipe PDF link annotation
- http://fukerijinexin.mygamesonline.org/ice_breakers_game.pdfIn PDF document text
- http://gutemirofexobu.iblogger.org/42482946082.pdfIn PDF document text
- https://fuwamelewupo.weebly.com/uploads/1/3/4/1/134131589/7126347.pdfIn PDF document text
- http://dewisazovuvoxi.mywebcommunity.org/1850169376.pdfIn PDF document text
- https://wawupibinotab.weebly.com/uploads/1/3/4/9/134900246/3133874.pdfIn PDF document text
- http://lepegumokolato.iblogger.org/complaint_email_response_template.pdfIn PDF document text
- http://koxezuj.22web.org/gisaxepijuta.pdfIn PDF document text
- http://kufigada.22web.org/audacity_software_windows_10.pdfIn PDF document text
- https://wovupidej.weebly.com/uploads/1/3/4/6/134687137/875e2f.pdfIn PDF document text
- http://sarepoxorak.22web.org/letizobonar.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
- https://uploads.strikinglycdn.com/files/b8006c66-9955-4725-83bd-bdef3cc9bfea/39917901335.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b60c4693-b6a5-4a9f-b90d-3be1d973bd55/percy_jackson_and_the_olympians_cast_of_characters.pdfIn PDF document text
- http://tumaselopewebu.rf.gd/gixemolobajijasiz.pdfIn PDF document text
- http://gunagiweraji.rf.gd/biblia_de_jerusalen_latinoamericana.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d070c6ef-033f-42ba-8122-edd02a2bbcaa/mvc_tutorial_java_spring.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ecb1481a-8bfd-403f-826e-ace61385f6a4/magnus_chase_sword_of_summer_chapter_summary.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e3796c1c-e0f1-4f6b-96ef-bba68a74e463/7484497421.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/99a57091-f129-4ddb-9adf-d7efdaf36fa0/hp_envy_4500_printer_troubleshooting.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/87164f41-8637-4246-89b0-60c69b0b8dc5/poxel.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_off000114e1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x114E1	5300 bytes
SHA-256: `0cdf76b079822671e6a511800c7a456fd13ec5a5aa6c935c1350569afc5efbfd`
`font_01_sfnt_off0001270c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1270C	11580 bytes
SHA-256: `2eb24fc3210eb915ddaf735cd66d0b9f9f50d92d8918c850ba4a67b0467201d0`
`font_02_sfnt_off00014ea0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14EA0	4324 bytes
SHA-256: `cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34`

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