PDF malware analysis — malicious · 2be0ddc27995e1fe

MALICIOUS

PDF

80.5 KB Created: 2021-04-16 18:20:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14

MD5: a71e99ca70952294e9a77c0dbdf3b1a8 SHA-1: 86ff5a7b876e79afc371e991fa5011b3ff75253b SHA-256: 2be0ddc27995e1feee23c3551e09d59522f807c7485037dd35ccfcc6bbab6343

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file is identified as malicious by ClamAV and an ML classifier, indicating a high probability of malicious intent. It contains a large number of external links, many pointing to disposable domains, suggesting it functions as a link farm for SEO manipulation or to distribute further malicious content. The embedded URLs and the heuristic firings strongly suggest a phishing or content-farming attack vector.

Machine Learning

Nyx PDF Classifier malicious score 0.9990

Heuristics 6

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.
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://soxebez.ru/strik?utm_term=college+algebra+formulas+and+examples PDF link annotation
- https://cdn-cms.f-static.net/uploads/4408866/normal_5fdb1bca71170.pdfIn PDF document text
- https://duxegolukazokun.weebly.com/uploads/1/3/1/3/131398215/jimizite.pdfIn PDF document text
- https://cdn.sqhk.co/tulotunofuz/1bhjuRJ/x_shot_crusher_nerf_gun.pdfIn PDF document text
- https://cdn.sqhk.co/lisakopew/Nighghb/followers_likes_tracker_for_instagram_repost.pdfIn PDF document text
- https://cdn.sqhk.co/bipufawawi/Yijdjfa/degigetalopevenuvugo.pdfIn PDF document text
- https://vuzaruluweketex.weebly.com/uploads/1/3/4/4/134478477/7a28ab4b6.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4374847/normal_5feb5c29d56ec.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368958/normal_602c6188f0478.pdfIn PDF document text
- https://cdn.sqhk.co/naziwixolagu/m8dOhap/talking_tom_2_app_download_for_android.pdfIn PDF document text
- https://xuwaxubefoju.weebly.com/uploads/1/3/1/0/131069763/dufopujeb-tiwajivoneku-wulejomu.pdfIn PDF document text
- https://puranezujifa.weebly.com/uploads/1/3/4/5/134582728/8093584.pdfIn PDF document text
- https://cdn.sqhk.co/rivitovolu/idwwice/90505839450.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4494888/normal_60002850d3710.pdfIn PDF document text
- https://paxituzupinemof.weebly.com/uploads/1/3/5/3/135303349/wadabevuketonebexi.pdfIn PDF document text
- https://limorevoxa.weebly.com/uploads/1/3/4/6/134611026/duxerag.pdfIn PDF document text
- https://tawusizigegik.weebly.com/uploads/1/3/3/9/133997505/489faa.pdfIn PDF document text
- https://luwozupewudaxu.weebly.com/uploads/1/3/1/3/131384663/addfffa9119.pdfIn PDF document text
- https://vafumesaz.weebly.com/uploads/1/3/4/5/134589630/e2d703c5ec0.pdfIn PDF document text
- https://devudupaf.weebly.com/uploads/1/3/4/8/134880603/405777.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://09235f31-469a-4613-94fc-36d04c1f642a.filesusr.com/ugd/8b6407_6a5e0e36a54f4d85a3948f679674eaff.pdf?index=trueIn PDF document text
- https://bf2b7b75-7790-49a7-81e6-d2546e692b42.filesusr.com/ugd/8ccf63_a186ca1c13714ccda7af3466e8bb5c74.pdf?index=trueIn PDF document text
- https://ecfc1f44-6648-4072-bff5-6ee4adcfbe4f.filesusr.com/ugd/e5a943_435375a9e101470ca044507c64a5d3e6.pdf?index=trueIn PDF document text
- https://8ee4d174-735f-4cd7-9396-c3a65dbcc337.filesusr.com/ugd/5ac313_b3d9d3e38ee440c5ad000cdfbe6326b5.pdf?index=trueIn PDF document text
- https://e082cb0d-9c22-4a21-acb7-e2c6127a51d3.filesusr.com/ugd/ff0c06_86716ed0305142b980880c3af5aca5dc.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e393.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE393	5476 bytes
SHA-256: `2c9de96085dc50aabacb8539f3865229e4e8fb4c796c80693eb4998b8b6c58b1`
`font_01_sfnt_off0000f617.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF617	11928 bytes
SHA-256: `986989942a88bd02019790b1f81085e06ff7c6de2e5f1a5c1c9a3ad2e5c0f0d6`
`font_02_sfnt_off00011ee5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11EE5	16180 bytes
SHA-256: `1cee35f3e34b570076ba6fd2f259d6e387914cfead38e09128c73f75e7689702`

Open this report in the interactive analyzer, or submit your own file for analysis.