PDF malware analysis — malicious · edd5660f0b14b8f7

MALICIOUS

PDF

85.6 KB Created: 2021-09-21 05:06:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24

MD5: 20cd0b29300850992104a861a989812f SHA-1: c8aac6af59049b0a8e67779daf2b4363c163436a SHA-256: edd5660f0b14b8f7b56e1c2d08978aa320acc5af3b29335469fe80980d0abad8

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The file contains numerous embedded URLs pointing to a link farm hosted on disposable domains, likely intended to redirect users to malicious sites. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic specifically indicates a pattern of using many distinct hosts with few links per host, a common tactic for evading detection.

Machine Learning

Nyx PDF Classifier malicious score 0.9974

Heuristics 5

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.
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://queure.ru/uplcv?utm_term=wifi+search+app+for+android PDF link annotation
- http://gelinyuanyi.com/upload_fck/file/2021-9-7/20210907023319590842.pdfIn PDF document text
- http://bhttourist.com/upload/fckimagesfile/kagijipalolexoxu.pdfIn PDF document text
- http://jinshi66.com/uploadfiles/files/neroke.pdfIn PDF document text
- https://sidexsideaudio.com/wp-content/plugins/formcraft/file-upload/server/content/files/16149316f959f9---65859367713.pdfIn PDF document text
- http://buyo-g.net/userfiles/file/78669894704.pdfIn PDF document text
- https://minhkygroup.com/luutru/files/pewadiletivino.pdfIn PDF document text
- http://stroytehcentr.ru/images/file/senigawexuxabaga.pdfIn PDF document text
- https://chowdhurytourism.com/ckfinder/userfiles/files/tulufubudoxigetuje.pdfIn PDF document text
- https://www.jnvhardoi.org/ckfinder/userfiles/files/58058379518.pdfIn PDF document text
- http://sakulchaiplace.com/Uploads/file/nisuferawutuger.pdfIn PDF document text
- http://jsqnchem.com/upload/files/kevoganezibufezob.pdfIn PDF document text
- http://wisdomtours.net/upload/file/wojejamija.pdfIn PDF document text
- http://capital96.com/userfiles/file/78346883149.pdfIn PDF document text
- http://www.groupementpecheduloir.com/ckfinder/userfiles/files/wawanipirokotim.pdfIn PDF document text
- https://www.renouer-auxerre.com/ckfinder/userfiles/files/91458207744.pdfIn PDF document text
- https://valkexclusief.reviewz.eu/app/webroot/files/userfiles/files/29151855194.pdfIn PDF document text
- http://webminmax.com/userfiles/file/82874405231.pdfIn PDF document text
- http://hooleihomes.com/cms_images/file/xivazajamuvasonosopamo.pdfIn PDF document text
- https://smlstripedbass.com/home/rock/public_html/ckfinder/userfiles/files/garasagusim.pdfIn PDF document text
- http://maryalo.com/userData/board/file/senerulerejapuribomaruf.pdfIn PDF document text
- https://weishinclinic.com/uploads/files/202109160047452798.pdfIn PDF document text
- https://gesema.com/UserFiles/file/sufaxajexakanu.pdfIn PDF document text
- https://feng-shuiworld.com/userfiles/file/vapixib.pdfIn PDF document text
- http://mediaworld.pro/ckfinder/userfiles/files/bosejidodisitadofi.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://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_off0000eb9e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEB9E	17236 bytes
SHA-256: `22166b9ed7d646cea43cc5f125d54c50c0352e73e7e3c7d543f44f472160c572`
`font_01_sfnt_off00011847.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11847	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off0001305e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1305E	10564 bytes
SHA-256: `0b22401bd1d72577ae4763b1c458e5f1c23832e58fd15c4341cc1d6a05dc2027`

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