PDF malware analysis — malicious · f2320eeb6960182b

MALICIOUS

PDF

85.1 KB Created: 2021-03-23 16:22:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02

MD5: a2032c0d76c1fe846bd92977a1cba0cb SHA-1: 1ae3a38205e3e173ac9bcb4d2c4571c8e7cb64cd SHA-256: f2320eeb6960182b76f3aed4f095e5ef2d52f05eaefc5c7e8aa89d4cc0385c00

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The sample is a PDF document flagged by ClamAV as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable hosting and link farms, suggesting a phishing or malware distribution campaign. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a deliberate attempt to obscure the final destination through multiple redirects. No scripts were extracted, but the presence of external URIs and the ML classifier's high confidence score support the malicious classification.

Machine Learning

Nyx PDF Classifier malicious score 0.9990

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://pelibifir.ru/strik?utm_term=black+friday+deals+2019+walmart+toys PDF link annotation
- https://xokekomoto.weebly.com/uploads/1/3/4/5/134598663/kotodem.pdfIn PDF document text
- https://laxivaxof.weebly.com/uploads/1/3/0/8/130874385/gukibalowoxuna-lobuwomin.pdfIn PDF document text
- http://luxibenuguk.getenjoyment.net/baofeng_dm_5r_manual.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383704/normal_6031749d81ab5.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4503197/normal_5fee0dbf8d1e9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4421770/normal_603cef205084c.pdfIn PDF document text
- https://cdn.sqhk.co/wirowanorax/VNOCJih/vonepetiguzopenolelafibu.pdfIn PDF document text
- https://xolovimuwoza.weebly.com/uploads/1/3/4/8/134865524/takugagapokonir.pdfIn PDF document text
- http://gofadivus.mygamesonline.org/what_is_a_dual_control_electric_blanket.pdfIn PDF document text
- http://zavulibalox.mypressonline.com/jopukipe.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4425211/normal_5fe8494bd650c.pdfIn PDF document text
- https://ruwatija.weebly.com/uploads/1/3/4/8/134846771/5172d32aa05a.pdfIn PDF document text
- https://cdn.sqhk.co/wivodojeg/hhgjbjW/55365710835.pdfIn PDF document text
- http://bumawusuka.mypressonline.com/scotsman_ice_machine_cleaning_cycle.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4415530/normal_601d5c4627350.pdfIn PDF document text
- https://cdn.sqhk.co/ravawiku/urihdFp/gajemoji.pdfIn PDF document text
- http://kirakexig.mypressonline.com/nikon_prostaff_rimfire_ii_3-9x40_bdc150_amazon.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://ribaxekag.epizy.com/panasonic_nn-sn651b_microwave.pdfIn PDF document text
- http://kisalonokexiwi.atwebpages.com/42059901613.pdfIn PDF document text
- http://dinopug.epizy.com/ms_access_software_free.pdfIn PDF document text
- http://zisukuvi.atwebpages.com/42161101550.pdfIn PDF document text
- http://vulopekusape.atwebpages.com/zakelameraliwa.pdfIn PDF document text
- http://gadoriwufes.rf.gd/37302916595.pdfIn PDF document text
- http://nogomazarem.epizy.com/renupekisosamegefejos.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f52f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF52F	5956 bytes
SHA-256: `60c0bc6263de19b87ec0abcd1482f69e0faca75ff1e60a99db4cf2644f4e85ff`
`font_01_sfnt_off00010988.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10988	11896 bytes
SHA-256: `bd7ae57bbccce93ac9ce8617f1c37d23940633a5bdcebbddcf9a39defabf8063`
`font_02_sfnt_off000131ec.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x131EC	16060 bytes
SHA-256: `5b0d2701ab39d2f69c66d7d16c60d8db0b323aa0832947137e757b5401d27330`

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