Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7f3ae8dd7b317f1…

MALICIOUS

PDF

88.6 KB Created: 2021-03-17 19:36:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9137392c907d17f6b5a8c0709aa49d92 SHA-1: b29c8fbeb3692a117ca9fa899e540b37bf3e67b7 SHA-256: c7f3ae8dd7b317f151c5c37568854bf923dc565429adb84deed178de569dbafc
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URI pointing to a suspicious domain, likely intended for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were directly extracted, the PDF structure and embedded URL suggest it's designed to trick users into visiting a malicious site, potentially leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://nipisod.ru/strik?utm_term=lista+de+verbos+en+ingles+pdf+presente+simple
    • http://maykistore.ru/vodobolorazakujep016wp.pdf
    • https://cdn-cms.f-static.net/uploads/4473916/normal_603cee63b1453.pdf
    • http://de-bewertung-id2842384.icu/113428896141jm1p.pdf
    • http://firavowinoza.iblogger.org/bittorrent_free_for_windows_32_bit.pdf
    • http://you-bestshop.xyz/tomazopitu2uh7q.pdf
    • http://1xbets-regs.site/polerusez3i23s.pdf
    • https://static.s123-cdn-static.com/uploads/4375541/normal_5feb3fe31571c.pdf
    • http://erogan-encolumbia.site/76046964449vt855.pdf
    • http://help-verifiedbadgecenter.com/aveyond_ahriman_s_prophecyx6a33.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/fodose/sonos_1001_error_code.pdf
    • http://xubibufopude.epizy.com/79376930066.pdf
    • http://xodolipifonabo.epizy.com/calendario_epidemiologico_2018_peru.pdf
    • http://fizojigijuzad.epizy.com/kilemoledepona.pdf
    • https://s3.amazonaws.com/jefazaxal/dunezejusakavudis.pdf
    • http://gipenebome.epizy.com/icd_10_code_for_history_of_compression_fracture_lumbar_spine.pdf
    • https://s3.amazonaws.com/roware/bear_scout_leader_guide_2017.pdf
    • https://s3.amazonaws.com/sinamozagemoger/how_do_i_form_an_llc_in_louisiana_for_free.pdf
    • https://s3.amazonaws.com/sewamos/how_to_use_battery_tender_4.5_amp.pdf
    • https://s3.amazonaws.com/rewepalazamiso/lotus_caravans_tremor_for_sale.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f724.bin
3817eb13d8bad1b06957db155e8a626e4421c9ca841f5a93f6b94032ef23c0fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF724 5288 bytes
font_01_sfnt_off00010903.bin
40953483ecca843f9d6bc80c60e3454f1257f322a84113e63a45f30729904a52		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10903 11672 bytes
font_02_sfnt_off00012f48.bin
a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12F48 16204 bytes
font_03_sfnt_off00014475.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14475 4324 bytes

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