PDF malware analysis — malicious · ffd96714f6767c9f

MALICIOUS

PDF

65.4 KB Created: 2021-03-15 11:46:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ac4c3495fe4864262701e6ffff07f1aa SHA-1: d1f297a9f2303298d6623b529b4686e06334ce41 SHA-256: ffd96714f6767c9f6d635dbb66bf08875c69ec4f11e9f3dc6b2420844f3122fe

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous external links, identified by the PDF_SEO_LINK_FARM heuristic, directing users to various PDF files hosted on external domains. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically phishing. The embedded URLs suggest an attempt to redirect users to potentially malicious content or phishing sites, masquerading as search results.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 5

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.
ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://druttle.ru/wix?keyword=5e+player%2527s+handbook+pdf+trove
- http://pawusewi.sportsontheweb.net/weluk.pdf
- https://cdn.sqhk.co/bodujemep/jbY3HE1/turbo_drift_3d_mod_apk.pdf
- https://cdn.sqhk.co/medujebukoma/diefLpq/.pdf
- https://pofimutazotoxo.weebly.com/uploads/1/3/4/0/134000188/tasarujigivonej.pdf
- https://bikuxemigoveju.weebly.com/uploads/1/3/4/3/134373773/1898179.pdf
- https://cdn.sqhk.co/nadoranur/L4igigX/97544604838.pdf
- https://fewirikikekaja.weebly.com/uploads/1/3/2/3/132302896/4f68b04db73.pdf
- https://munulokepopat.weebly.com/uploads/1/3/5/2/135297381/4601803.pdf
- http://beguwidip.scienceontheweb.net/65303621561.pdf
- https://cdn.sqhk.co/tatogevi/PfwQJjf/evolution_2001_full_movie_download.pdf
- https://cdn.sqhk.co/lefuwaregew/jecij7U/51545109625.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/gofilafixu/bestwap._in_movie_2016.pdf
- http://gosaduzunake.myartsonline.com/combinations_and_permutations_worksheet_with_solutions.pdf
- https://s3.amazonaws.com/gumagabu/16832165195.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000c233.bin` `154ed0391f4cf9fdd7965e9ad5e959359b3d285bda9c5ea3f5b2214102a4420f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC233	5556 bytes
`font_01_sfnt_off0000d51f.bin` `f30d86649e32fa6884183cf6c1d3f4790f375e855501b7f1ec6769278b0a48f6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD51F	10332 bytes

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