Malicious PDF — malware analysis report

Static analysis result for SHA-256 16832f70960e2364…

MALICIOUS

PDF

75.7 KB Created: 2021-03-01 22:57:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c046270cdd2627627db61d9fee985786 SHA-1: 5d3a68868a265affbb274ce298bab96da65cc4c7 SHA-256: 16832f70960e2364923aab85f1aae4394ee4da4ef13e937eb84785eb16502fe7
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'pelibifir.ru' suggests the document is designed to redirect users to a potentially harmful site. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://pelibifir.ru/strik?utm_term=how+to+make+text+to+text+connections
    • http://copyright-supporthelp.com/what_reading_level_is_the_prince_warriorsigoi7.pdf
    • https://static.s123-cdn-static.com/uploads/4503197/normal_5ff30e095532c.pdf
    • http://rafale.store/19761422909pqbqv.pdf
    • https://libotavod.weebly.com/uploads/1/3/0/8/130813055/jewavita-bomaxawinuzefu-jovejazatiwex-felebuzijidut.pdf
    • https://static.s123-cdn-static.com/uploads/4495531/normal_5ffef7e35ea73.pdf
    • https://static.s123-cdn-static.com/uploads/4426418/normal_5fc865f92d79a.pdf
    • http://bavewemelemare.iblogger.org/38486063700.pdf
    • http://usejus.pro/app_lock_apk_free_for_samsungl1pyf.pdf
    • http://puveputado.sportsontheweb.net/tenosezidubuv.pdf
    • http://chunyoo.com/richard_ii_shakespeare_famous_quotes7snqz.pdf
    • https://cdn-cms.f-static.net/uploads/4485305/normal_5fd6df27c7ea2.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://pugotividat.epizy.com/rival_crock_pot_manual_and_cookbook.pdf
    • http://fatesixinubumot.epizy.com/37760228910.pdf
    • http://saxogif.epizy.com/carpigiani_batch_freezer_manual.pdf
    • http://xifabopopotesa.epizy.com/gesojesepalokomoxunuw.pdf
    • http://ropajevunowijit.epizy.com/67897539497.pdf
    • http://wuwedilejom.myartsonline.com/how_to_make_flavored_water_with_sodastream.pdf
    • http://kawerulim.onlinewebshop.net/79247997485.pdf
    • http://fukogalijikufoz.epizy.com/sofuwopelatafuligesigiwe.pdf
    • http://www.readwritethink.org/professional-development/strategy-guides/making-connections-30659.html
    • 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_off0000ec95.bin
8589f6dc6f369579f81285ad125b9ce9e7ef92ce41fb66d4df3332fb4adad3cd
pdf-font-stream PDF embedded font (sfnt) at offset 0xEC95 5000 bytes
font_01_sfnt_off0000fd99.bin
5452e08aefb41afe82eeedac08ce5a286a83fdf455cd68ed2ed40971bec23df1
pdf-font-stream PDF embedded font (sfnt) at offset 0xFD99 10388 bytes