PDF malware analysis — malicious · 1db0f5f107e0a441

MALICIOUS

PDF

92.6 KB Created: 2021-09-21 10:38:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21

MD5: 55ee2d0145d0a07a7dce28a790c4b1e4 SHA-1: df141c9c7b3c56fb84cdd41830d6e1095010cf59 SHA-256: 1db0f5f107e0a44136758b53925d0e8eeadb59b6340a4823c59fae4e7803be70

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan. Heuristics indicate it functions as a link farm, directing users to numerous distinct domains, many of which host PDF files. The presence of embedded URLs and the overall structure suggest an attempt to distribute malicious content or phish for information.

Machine Learning

Nyx PDF Classifier malicious score 0.9930

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 http://lacasedescaraibes.fr/file/32810784214.pdf In PDF document text
- https://at1apigroup3.com/contents/files/zidiwisewuzejogu.pdfIn PDF document text
- https://lacaune.hu/userfiles/file/vagujuzuwi.pdfIn PDF document text
- http://easternhoteljeju.com/FileData/ckfinder/files/20210902_996D620A82DE7AA7.pdfIn PDF document text
- http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/1613f402e22efb---75133481739.pdfIn PDF document text
- http://diamant-x.sk/UserFiles/file/79427358742.pdfIn PDF document text
- http://relaxzenter.com/uploads/files/87833642563.pdfIn PDF document text
- http://fanti-fitness.pl/uploads/assets/file/80373214060.pdfIn PDF document text
- http://linkingpeople.info/userfiles/file/68957592004.pdfIn PDF document text
- https://cochleartudaskozpont.hu/files/42902104167.pdfIn PDF document text
- http://studiorestagno.eu/userfiles/files/xetisizawilukiti.pdfIn PDF document text
- https://peintures-descours.fr/fichier/files/pejafejoguxixowanoxaju.pdfIn PDF document text
- http://barbusci.it/maisUserFile/file/rudexupebadat.pdfIn PDF document text
- https://healthtecindia.com/userfiles/file/34281476132.pdfIn PDF document text
- https://asken.as/bilder/file/70531674434.pdfIn PDF document text
- http://radio-salsa.fr/php/rs/filesupload/file/29266624467.pdfIn PDF document text
- https://clarkfamilybuilders.com/home/clark/public_html/ckfinder/userfiles/files/pojigoguvinorununobo.pdfIn PDF document text
- http://szjglaw.com/uploadfile/file/2021091307272973499.pdfIn PDF document text
- https://bbensonmft.com/wp-content/plugins/super-forms/uploads/php/files/6e41919827736e2c9eeaed4bdc9f56e2/66840084315.pdfIn PDF document text
- http://lavalnerina.com/userfiles/file/20704353626.pdfIn PDF document text
- https://wanfutemple.urwaydesign.com/data/file/userfiles/files/xojolodozaw.pdfIn PDF document text
- http://dc-a0dcf319a153.breakthroughsport.com/userfiles/files/kafoxanosilim.pdfIn PDF document text
- http://controlsystemco.com/cache/fck_files/file/92180258723.pdfIn PDF document text
- https://beautydent.hu/editor_up/66812680974.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=dragon+ball+ep+27PDF link annotation
- 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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e0da.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE0DA	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000f8eb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF8EB	16160 bytes
SHA-256: `0de48d09b0091e2dcca1524f119562a2650f4f0070c1ddb91a42211a810a88bd`
`font_02_sfnt_off00010e78.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10E78	10380 bytes
SHA-256: `d8ed8f91450a6d7dfc79eeeab1b7522a1d52bbedc8f5ceb4eef0923dfc68a1a8`
`font_03_sfnt_off000125e5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x125E5	23928 bytes
SHA-256: `fa60c4c5087a9f27b8cf4d3ea23a50668d83d13aa5c209c9595c19e962582c44`

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