Malicious PDF — malware analysis report

Static analysis result for SHA-256 91014a8d483aa8a8…

MALICIOUS

PDF

79.4 KB Created: 2021-03-22 06:11:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f85179d205bbc83ffd9c3215b999f5b5 SHA-1: 76a039ad4483f730577b0e5a6d16f3b8bece9a47 SHA-256: 91014a8d483aa8a8eab496a1bae3061f251322070cebfb3b1fa4a6541a02def5
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI that appears to be a search result lure for "google sites tutorial video", likely intended to trick users into downloading further malicious content. The presence of embedded URLs and the nature of the detection suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wix?keyword=google+sites+tutorial+video
    • http://teachersaid.fun/79641144604uwu6m.pdf
    • http://rocketdocs.us/8641287471it5lb.pdf
    • http://totaxusozavu.sportsontheweb.net/rousseau_social_contract.pdf
    • http://deliwubavamir.mypressonline.com/mutobobufojipig.pdf
    • http://penowidusuj.22web.org/america_the_essential_learning_edition_volume_2_online.pdf
    • http://pedron.fun/200125425977gc1u.pdf
    • http://habirovradik.ru/where_i_can_donate_my_clothes_near_me0ufb9.pdf
    • https://fisoguxosat.weebly.com/uploads/1/3/2/7/132740182/8797536.pdf
    • http://kekijojovif.sportsontheweb.net/asian_countries_name_list.pdf
    • https://mesajenijapab.weebly.com/uploads/1/3/0/9/130969967/resiruzepi.pdf
    • https://tabetigilazewa.weebly.com/uploads/1/3/5/3/135392987/8491353.pdf
    • http://bopolubolef.mywebcommunity.org/sociological_imagination_definition.pdf
    • http://lnstagram-verifedbadge.com/47836855814pkh9.pdf
    • https://bubizepanawip.weebly.com/uploads/1/3/4/4/134480996/1814140.pdf
    • http://tapasin.sportsontheweb.net/instrumen_survei_akreditasi_puskesmas_2020.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vatonafikokex.atwebpages.com/heat_treatment_of_austenitic_stainless_steel.pdf
    • http://pudugivifo.myartsonline.com/puxilokinupifi.pdf
    • https://s3.amazonaws.com/tiluwisulepam/algorithm_mathematics.pdf
    • https://s3.amazonaws.com/zibenoroduzuw/payment_agreement_template.pdf
    • https://s3.amazonaws.com/gumegulaxi/dslr_camera_vector_free.pdf
    • https://s3.amazonaws.com/sajatesawodiji/how_to_address_board_members_in_a_letter.pdf
    • http://risasuwoz.epizy.com/27337708842.pdf
    • https://s3.amazonaws.com/dagasopones/how_to_update_firmware_garmin_fenix_5.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_off0000fad1.bin
b2e5a4db0c009b72d01fc0a93ff7c04478c8e1995a125c6b9c16232ffbdd2f7d
pdf-font-stream PDF embedded font (sfnt) at offset 0xFAD1 5084 bytes
font_01_sfnt_off00010c36.bin
0c4dee1fed36d9de9066c4616bbb9b01d410bf4fbfae770a87de247a165f2110
pdf-font-stream PDF embedded font (sfnt) at offset 0x10C36 10628 bytes