Malicious PDF — malware analysis report

Static analysis result for SHA-256 156ab1fd7b170d1b…

MALICIOUS

PDF

77.1 KB Created: 2021-03-09 22:49:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a66a6db0076f28094f550a52e98b2178 SHA-1: 0231ed04fbf4c89d83489d45d0ce5d8db2bd4258 SHA-256: 156ab1fd7b170d1b9fbad9e273ecd79a810b2e2f8215c3e147158e02b88c42e6
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV. It contains an embedded URI pointing to a suspicious domain, 'ponafet.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to 'Android game reviews 2018', indicating a social engineering attempt to direct users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://ponafet.ru/123?utm_term=android+game+reviews+2018
    • http://zekaxezixil.medianewsonline.com/helical_antenna_design.pdf
    • http://gakawisogafuga.mygamesonline.org/what_is_the_theme_of_the_book_code_talker.pdf
    • https://cdn-cms.f-static.net/uploads/4443803/normal_603b0154245b8.pdf
    • https://cdn-cms.f-static.net/uploads/4394073/normal_602f8f4dbd0b6.pdf
    • https://static.s123-cdn-static.com/uploads/4428331/normal_5feb52b96704f.pdf
    • http://tobufupevujuma.mygamesonline.org/jumpsuit_pattern_womens.pdf
    • http://seluluxafej.22web.org/gigatogunevapuzemigovorug.pdf
    • http://kufafukedexepix.mygamesonline.org/bartender_training.pdf
    • http://finonit.mypressonline.com/keto_reset_diet_cookbook.pdf
    • https://cdn-cms.f-static.net/uploads/4374851/normal_5fda8e32460dd.pdf
    • http://sosiwawivijomo.scienceontheweb.net/62576531859.pdf
    • http://jogubewuzamofet.iblogger.org/score_hero_life_hack_apk.pdf
    • https://cdn-cms.f-static.net/uploads/4367951/normal_6041b403ac2e3.pdf
    • http://wamuwosola.mygamesonline.org/bebivudokujida.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/d4cc269f-989e-4d68-b414-a4a306a87b82/64008916724.pdf
    • https://uploads.strikinglycdn.com/files/b354791c-2698-4688-975b-cee442896f10/fabepufozuzigamejuruzagit.pdf
    • http://wipadafefuxasi.onlinewebshop.net/wajutuguvul.pdf
    • http://vefimom.epizy.com/zecharia_sitchin_hrvatski.pdf
    • https://uploads.strikinglycdn.com/files/ef6374ba-7626-4e58-9236-cea3a10cce83/13557335338.pdf
    • https://uploads.strikinglycdn.com/files/e17b8707-70b1-4963-82d5-b08793d8bb55/saletevamasivipi.pdf
    • http://fodevixitawedur.epizy.com/autodesk_3ds_max_full.pdf
    • http://tiluxusimutine.atwebpages.com/nomifarifasikozexuno.pdf
    • http://luxupovokajaf.onlinewebshop.net/can_you_call_your_child_god_uk.pdf
    • http://rubuvajaroxe.epizy.com/27017590510.pdf
    • https://uploads.strikinglycdn.com/files/6c298543-c8c9-4ab1-9a32-e5522facf960/cost_to_change_address_on_mn_drivers_license.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_off0000efe2.bin
09149dae284115a891c15cacced0ac91ed63436243215c4716dcf33ad3f163d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEFE2 5776 bytes
font_01_sfnt_off0001038b.bin
0565386c62be780399b88194ad8a550b71801cd3cd01078d2575c2dcfe00e273		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1038B 10376 bytes

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