Malicious PDF — malware analysis report

Static analysis result for SHA-256 52788ecb9d76bb52…

MALICIOUS

PDF

79.2 KB Created: 2021-01-20 23:34:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c4f56b0dc64520f120c4ec31e58d2f94 SHA-1: de9f843f0bca62aeaa9ef2d9a200d73556222e02 SHA-256: 52788ecb9d76bb52504891a2192df09f8bcda9bd2e0e78150e1f2e2d5b2515c0
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous embedded URLs, many of which point to disposable hosting or link farms, indicating a phishing or scam attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a lure to external malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafffi.ru/123?utm_term=food+lion+gift+cards+bulk
    • https://pojekemo.weebly.com/uploads/1/3/4/4/134469054/8281042.pdf
    • https://site-1176882.mozfiles.com/files/1176882/map_json_to_java_object_android.pdf
    • https://cdn.sqhk.co/rorifugera/D9khhyL/air_combat_free_download.pdf
    • https://cdn.sqhk.co/vimewiki/gfdkgJJ/amtrak_police_jobs_new_york.pdf
    • https://cdn.sqhk.co/nujidegowupi/henLhgM/xemuto.pdf
    • https://cdn.sqhk.co/xumirikebixo/iabgejg/zombie_blaster_nerf.pdf
    • https://site-1166701.mozfiles.com/files/1166701/two_sisters_thai_potomac.pdf
    • http://fofesivolu.iblogger.org/ap_intermediate_time_table_2019.pdf
    • http://nefuwumimo.iblogger.org/1928117030.pdf
    • https://cdn.sqhk.co/sexuzoropa/bi0wijh/agri_commodity_prices_live.pdf
    • https://cdn.sqhk.co/xozirijor/hd6ghgh/pajafoporome.pdf
    • http://miworusak.iblogger.org/40637082922.pdf
    • https://site-1252793.mozfiles.com/files/1252793/anbe_peranbe_video.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sobibuxasegisun.rf.gd/login_template_for_android_app.pdf
    • http://zijomofi.epizy.com/xogokumina.pdf
    • http://runoxujozu.rf.gd/tizewof.pdf
    • http://losaxoxajav.epizy.com/1708711585.pdf
    • http://taxisariwoboduz.epizy.com/radokolokobezisodozabex.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.

FilenameKindSourceSize
font_00_sfnt_off0000f7a4.bin
8b29e56faa5795b23abcf008e5b84fcf2f74d4a280431b29a2ca60b407807edc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF7A4 5348 bytes
font_01_sfnt_off000109ef.bin
fa6f6c063d98d9694542dc088892862b137b7eff2bd139df9cc42b3f532156dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x109EF 10968 bytes

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