PDF malware analysis — malicious · b32046a15bbb2024

MALICIOUS

PDF

78.7 KB Created: 2021-06-09 05:59:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25

MD5: d2a3cced2390bee65acc9aa11662f0f0 SHA-1: 2abadb3ed53de0192950232b29765c4026c37ea3 SHA-256: b32046a15bbb2024df93a3b9b6873bf8438ebb9443be441925bf255b4efec99e

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 0.9991

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://wastran.ru/pbw?utm_term=induction+ppt+template PDF link annotation
- https://static.s123-cdn-static.com/uploads/4459468/normal_5ff1ae676804a.pdfIn PDF document text
- https://nuviwusu.weebly.com/uploads/1/3/4/4/134486429/devizegezawojef_kizeralotujevej_suman.pdfIn PDF document text
- https://fufivivol.weebly.com/uploads/1/3/0/8/130873849/8273693.pdfIn PDF document text
- https://lutapusudifo.weebly.com/uploads/1/3/1/0/131070527/3095255.pdfIn PDF document text
- https://teribupugabi.weebly.com/uploads/1/3/4/8/134852699/xoxexuvuvuwa.pdfIn PDF document text
- https://kipamafulu.weebly.com/uploads/1/3/4/5/134588126/dewenevotuketul.pdfIn PDF document text
- https://kazajiti.weebly.com/uploads/1/3/4/4/134456981/vubusez.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4402960/normal_5fe69b594b45a.pdfIn PDF document text
- https://tujobofawoti.weebly.com/uploads/1/3/2/6/132695409/5355619.pdfIn PDF document text
- https://botakukejase.weebly.com/uploads/1/3/4/6/134610266/c1a18901cbe20.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://kizisoj.pbworks.com/w/file/fetch/144526377/37328551729.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4e6f4301-9cad-4ae8-b673-e4e46541505f/object_oriented_software_engineering_using_uml_patterns_and_java_3rd_edition.pdfIn PDF document text
- http://tujelupirobe.pbworks.com/w/file/fetch/144614181/mary_kay_skin_care_survey.pdfIn PDF document text
- http://punumiboxo.pbworks.com/w/file/fetch/144797997/kepusijarexebez.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1add3ca5-d356-4c9f-ad61-3d9c314a876e/is_wonder_woman_on_any_streaming_services.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/25107e47-2795-451d-b23a-ce2b0bab05ad/roald_dahl_esio_trot_movie_trailer.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/176bece7-875a-4ef3-a6cb-7b30bef24783/what_is_records_of_declaration_disbursements_division.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/82c8346f-df77-4db6-8113-64e65220a397/1677529348.pdfIn PDF document text
- http://doxawadar.pbworks.com/f/wopodisazen.pdfIn PDF document text
- http://tusawijer.pbworks.com/w/file/fetch/144736203/kenmore_coldspot_106_service_manual.pdfIn PDF document text
- http://laxaxufudej.pbworks.com/w/file/fetch/144510000/hungry_shark_evolution_unlimited_money_v2.0.0_mod_apk.pdfIn PDF document text
- http://risuxujuvu.pbworks.com/w/file/fetch/144518244/16179113440.pdfIn PDF document text
- http://togiwuvoze.pbworks.com/f/2753889153.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_off0000ed46.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xED46	2988 bytes
SHA-256: `507d5095653cb1d73ea84cdb489180aaa5bd95d7add5ee11c00d56e8a6e2af51`
`font_01_sfnt_off0000f7e2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF7E2	4884 bytes
SHA-256: `c004087d90f3028ba9026ce425efe5eb408d96ef0cdedb9fb99b595271d7947f`
`font_02_sfnt_off0001086c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1086C	10844 bytes
SHA-256: `6ae8ed4ceaf641a1249f286d6944ad4e0258de701e0ad8f90be8614720f0d6c9`

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