PDF malware analysis — malicious · f6a2b22067dc8784

MALICIOUS

PDF

101.5 KB Created: 2021-04-03 13:47:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27

MD5: 49ec4436e404cf48980646c15e02a8a1 SHA-1: ed351300e4d97eed2e8063a9797cc4fd6ef7e2ff SHA-256: f6a2b22067dc878400599fc63a9cd294d1eec0dc01603aed2690c3b6e7c81548

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a heuristic indicating it is part of a link farm, with numerous external links. One prominent external URI, 'https://mezovuduw.ru/123?utm_term=disney+princesses+fight+list+answers', is directly embedded and likely serves as the lure. ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to a phishing or malware distribution site.

Machine Learning

Nyx PDF Classifier malicious score 0.9988

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 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.
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://mezovuduw.ru/123?utm_term=disney+princesses+fight+list+answers PDF link annotation
- https://cdn-cms.f-static.net/uploads/4380674/normal_60493166be2ab.pdfIn PDF document text
- http://lnstagramcopyrightservices.org/61960575560fn9jo.pdfIn PDF document text
- https://jolosusopafo.weebly.com/uploads/1/3/4/0/134097145/6334300.pdfIn PDF document text
- http://24goodstore.site/956312713271al6y.pdfIn PDF document text
- http://zumbayuliya.online/jikusinizvfuq.pdfIn PDF document text
- https://tinubabitem.weebly.com/uploads/1/3/4/3/134361694/wimolilibezokagemi.pdfIn PDF document text
- http://alcozerox.com/super_jungle_world_runcq7zi.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4408588/normal_5ff48a2f86c97.pdfIn PDF document text
- http://ens-pictures.ru/essay_writing_topics_for_ielts_2019ni7e0.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://s3.amazonaws.com/juzowilipi/waguvi.pdfIn PDF document text
- https://s3.amazonaws.com/xovekolamoxe/do_self_cleaning_water_coolers_really_work.pdfIn PDF document text
- https://s3.amazonaws.com/zurovajij/98486760633.pdfIn PDF document text
- https://s3.amazonaws.com/nijudow/crazy_frog_dance_mp4.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/dd776b14-06d5-4119-be78-0317e6d26a78/54114254663.pdfIn PDF document text
- https://s3.amazonaws.com/vovuzize/99444706991.pdfIn PDF document text
- https://s3.amazonaws.com/jifedefujodu/50139252226.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1d2f9c5c-f911-40a1-9e62-ff6c49452e51/18200219686.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/08f43e05-c149-4087-8c48-0147bdb0ff3f/74738852241.pdfIn PDF document text
- https://s3.amazonaws.com/gimisorixosu/65118168382.pdfIn PDF document text
- https://s3.amazonaws.com/tobaziw/acer_aspire_one_722_memory_upgrade_4gb.pdfIn PDF document text
- https://s3.amazonaws.com/jarirotexab/11925541034.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1c356e90-8e70-4fd8-a653-cd280347b7cd/home_zone_security_triple_head_led_motion_sensor_security_light.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00012509.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12509	5148 bytes
SHA-256: `2080bae93ea4d1b1a2591f4c639925fef92d1ed898f33daa7bb982d33cc77696`
`font_01_sfnt_off00013694.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13694	13260 bytes
SHA-256: `1106049c3fd32316fe6564c961f8132da90adde4ffd3479c4c9bc116ec73ca96`
`font_02_sfnt_off000160da.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x160DA	16864 bytes
SHA-256: `8742f8a3c03e0217d736d43cc7e627462be8575b43bc21e007fd1b1a3e69e785`
`font_03_sfnt_off000177e1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x177E1	4324 bytes
SHA-256: `05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176`

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