PDF malware analysis — malicious · a802d5783e3a037b

MALICIOUS

PDF

82.1 KB Created: 2021-04-13 00:53:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16

MD5: 03962338cc7c4f449539ab29af18664d SHA-1: b99a915793f9887a0c402bd72e7f2003dbeb3f44 SHA-256: a802d5783e3a037be790eec7df86b1f976f1515a451f3e53edc7796febdddeda

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of multiple external URIs, including one flagged as a link farm on disposable hosting, suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are consistent with a malicious document designed to trick users into navigating to harmful websites.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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 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.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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://bologen.ru/strik?utm_term=taurus+pt111+pro+pistol+review PDF link annotation
- http://formulamoney.top/monsters_inc_boo_crying_wikiazifl.pdfIn PDF document text
- http://fujigukatujewu.medianewsonline.com/public_relations_examples.pdfIn PDF document text
- http://1xbet-regi.site/how_do_you_renew_your_license_during_covid_19pkqs6.pdfIn PDF document text
- http://kmplitka.shop/fighter_diet_caramel_whey_proteinezqhy.pdfIn PDF document text
- http://all-system7.club/stick_fight_animation_music4qnoy.pdfIn PDF document text
- https://dinurafilaxu.weebly.com/uploads/1/3/4/6/134621410/0aff87bcb34c40.pdfIn PDF document text
- http://dapabikokewe.iblogger.org/agenda_planner_2020_gratis.pdfIn PDF document text
- http://jomikifu.medianewsonline.com/kiwawasazazebamajotab.pdfIn PDF document text
- http://blog-uniswap.org/app_store_connect_count0hams.pdfIn PDF document text
- https://bufuxilanu.weebly.com/uploads/1/3/4/4/134402831/8458549.pdfIn PDF document text
- http://pejelurim.getenjoyment.net/breathing_apparatus_manual.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://jaxunukologefis.onlinewebshop.net/playstation_vita_psn_store.pdfIn PDF document text
- https://9c43cb74-45e3-47de-9527-fda2e8336169.filesusr.com/ugd/af0aa9_be0e9aa6cdaa4408b492a4909fe31840.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/b61b08fd-bceb-4fb3-aca5-dd5527600526/doramokijugejuzugaxalod.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b2395688-fd64-440c-a2d0-c36ab1069560/bounty_hunter_tracker_iv_depth_test.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2dd9e8f7-5f73-4a8c-8271-f6f15b27d659/wudebitakurezotuzineti.pdfIn PDF document text
- http://zodexalanokaxaj.rf.gd/how_to_use_transfer_tape_on_vinyl.pdfIn PDF document text
- https://0ea28b16-58c2-472d-b6be-3e97fe9b7bb6.filesusr.com/ugd/696b8a_d622a42c20a74f0aace54672481276a5.pdf?index=trueIn PDF document text
- http://jijabivu.epizy.com/after_movie_trailer_free.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_off0000f57f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF57F	4744 bytes
SHA-256: `940ab63a18de33fc2f7822b7f1381de2c3e534c752ba245d8b9d044a6f91df9a`
`font_01_sfnt_off000105d0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x105D0	10964 bytes
SHA-256: `8d13027842c43ac737389de1ec3fb867e6750944a5842f64a4b9c38d6a4c6559`
`font_02_sfnt_off00012b32.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12B32	4324 bytes
SHA-256: `05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176`

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