Malicious PDF — malware analysis report

Static analysis result for SHA-256 3065a2eea825e56b…

MALICIOUS

PDF

77.3 KB Created: 2021-03-23 09:19:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: db42158592ad910ca91c2db0bea9ce5e SHA-1: e462c437ccc778db9da6f4c93a1e8706856d4ed4 SHA-256: 3065a2eea825e56b3e40f9fae3e8a1acd11abe7a6f40e4235b1d8173fee82d0e
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that leads to a domain associated with phishing. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text related to 'app store optimization pdf', likely a lure to entice users to click the malicious link.

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://resalured.ru/award?keyword=app+store+optimization+pdf
    • http://xoziduso.mypressonline.com/chemistry_atomic_structure_questions.pdf
    • http://xegazinijitup.mywebcommunity.org/igcse_human_biology_notes.pdf
    • http://mugedly.xyz/what_is_the_purpose_of_a_deed_poll_in_ugandazd5lz.pdf
    • http://xijulefabogi.getenjoyment.net/when_do_starbucks_employees_get_raises.pdf
    • http://tikovg.xyz/bemoxekotakalefifa07b.pdf
    • http://drive4mclanemilwaukee.com/983295052631rz00.pdf
    • http://petrol-v-pol-price.site/pevogefthc.pdf
    • http://medemukiduba.sportsontheweb.net/66456485251.pdf
    • http://xadukododefisev.22web.org/graphing_quadratic_functions_in_vertex_form_worksheet_answer_key.pdf
    • http://khanapoorti.com/94045564681ojh0b.pdf
    • http://zipubezexupoka.mywebcommunity.org/78638935737.pdf
    • http://fekowepiz.mywebcommunity.org/bldc_motor_principle.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://nosofaxiwobud.epizy.com/sajaritisatemifiposijog.pdf
    • https://9dc8676a-0e58-44ee-a512-e339c7094702.filesusr.com/ugd/7c0652_15e60126a46042d5b15dfd95f358f24b.pdf?index=true
    • http://fozijasorizol.epizy.com/dususemijajadu.pdf
    • https://s3.amazonaws.com/panalipolifod/what_comes_out_of_a_pimple_when_you_pop_it.pdf
    • https://s3.amazonaws.com/putelekireza/star_wars_battlefront_3_file.pdf
    • http://nokolul.epizy.com/23578950807.pdf
    • https://s3.amazonaws.com/jiguwuzobozobaz/afterburner_arcade_manual.pdf
    • http://jowosos.myartsonline.com/causative_advanced_exercises.pdf
    • https://0a3c8164-ddd9-4522-8472-457ce31ece15.filesusr.com/ugd/d32f78_1aa21012977e4de2a44accd2481ab330.pdf?index=true
    • https://s3.amazonaws.com/dedinavesute/70428501217.pdf
    • https://s3.amazonaws.com/vonutavekip/answerability_meaning_in_urdu.pdf
    • https://9907981b-0bc7-4fd3-a434-169f7cdadf42.filesusr.com/ugd/575363_522da946ec0348879cad96fd6989b3e6.pdf?index=true
    • http://rikonuge.rf.gd/nesikugujozopawi.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_off0000ef8b.bin
797912df71072a06351bac8ebe533bb915a8a343cb321999c0379cb77c52c0be		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF8B 5196 bytes
font_01_sfnt_off0001012b.bin
d8fd37e8b44bf8c115b681652d7e835b0cb28a7204414c99dc41ffb244f3203e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1012B 10852 bytes

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