PDF malware analysis — malicious · fe4f22ee29300ca3

MALICIOUS

PDF

69.9 KB Created: 2021-09-25 17:04:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27

MD5: 60b4bbb510cb344d7ca209883df1ddda SHA-1: c85d2f5440b2a49bebf90293bd65e6a93d69dc2c SHA-256: fe4f22ee29300ca3620e53dfac8b752040abf3f035806c69b67d587953e8b8d4

146 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF that exhibits characteristics of a phishing lure, specifically a callback scam, as indicated by the 'SE_CALLBACK_LURE' heuristic. The ML classifier also flagged it as malicious with high confidence. Numerous external URLs are embedded, suggesting it may lead to further malicious content or phishing pages. No scripts were extracted, but the PDF structure and embedded URLs point towards a phishing attack.

Machine Learning

Nyx PDF Classifier malicious score 0.9965

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.
Callback phishing phone lure medium SE_CALLBACK_LURE

Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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://garglob.ru/uplcv?utm_term=tank+trouble+limopop PDF link annotation
- http://chamdure.com/DATA/files/renoda.pdfIn PDF document text
- http://giprozdraw.ru/ckfinder/userfiles/files/34795219441.pdfIn PDF document text
- https://patriciogaete.com/upload/file/tiwipop.pdfIn PDF document text
- https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613c8c0d4b9e4---76762680576.pdfIn PDF document text
- https://underworldgear.com/upload/users/files/57718181518.pdfIn PDF document text
- http://alpanelektrik.com/depo/sayfaresim/file/riwofebe.pdfIn PDF document text
- http://gazosilikatnn.ru/uploads/files/57624346985.pdfIn PDF document text
- http://nfrostov.ru/upload/files/posajadod.pdfIn PDF document text
- https://leavereview.com/customerinterview/ckfinder/userfiles/files/ladosumanerepef.pdfIn PDF document text
- http://tucholainfo.pl/userfiles/file/67872975494.pdfIn PDF document text
- https://harom.ro/files/file/rukatunevumotuluten.pdfIn PDF document text
- https://avigailpekelman.com/sites/default/files/file/97014283726.pdfIn PDF document text
- http://napiarsaigh.com/images/19122933173.pdfIn PDF document text
- http://holmeslawfirm-iowa.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/63628970325.pdfIn PDF document text
- http://hoaiduc.edu.vn/ckfinder/userfiles/files/37349119666.pdfIn PDF document text
- https://amigo-shop.105h.net/upload/files/vekewivofumotipibomadu.pdfIn PDF document text
- http://pune-india.info/userfiles/file/vezoradafuzonubekavunufi.pdfIn PDF document text
- https://freshchannels.com/home/sites/freshchannels/public_html/ckfinder/userfiles/files/73955745673.pdfIn PDF document text
- https://kcharp.com/ckfinder/userfiles/files/39205119873.pdfIn PDF document text
- http://iphysiology.ru/upload/jewovizajamutisuregivuf.pdfIn PDF document text
- https://www.profiemg.cz/upload/ck/files/jovavif.pdfIn PDF document text
- http://ck-kutnahora.cz/gais/image/file/79164870313.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_off0000af21.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAF21	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000c738.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC738	10540 bytes
SHA-256: `7a5bc25de1829f76d4f65c17fb81265acfc9db77639c984ba70593ad83dd677b`
`font_02_sfnt_off0000defe.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDEFE	17068 bytes
SHA-256: `8fb629fd9051da5afd16480f2583a928e49b86757de40e637172c2ec88b80ac1`

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