Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd501a74f30d441c…

MALICIOUS

PDF

80.3 KB Created: 2021-04-02 16:16:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: da151b58fbeb87efcb1abd6c70378a57 SHA-1: 09418c38d897f57176594d7243c3d079474c2c2c SHA-256: fd501a74f30d441c7e9f2730ab2a851d4e0502a63f145ab06f4590bc1a230994
96 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing site. No scripts were extracted, but the presence of the malicious URL and the high confidence detection scores indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://resalured.ru/123?utm_term=column+chromatography+lab+report
    • https://cdn-cms.f-static.net/uploads/4412778/normal_6032185424aa7.pdf
    • http://comforfemj.fun/what_is_the_best_brand_of_washing_machine_in_australiaif1b5.pdf
    • https://cdn-cms.f-static.net/uploads/4414173/normal_60304b8b4df7d.pdf
    • http://saniwigudovo.scienceontheweb.net/bixekibak.pdf
    • http://domobifotuza.sportsontheweb.net/list_of_broad_spectrum_antibiotics.pdf
    • http://helplnstagramcontact6088756.com/levenirizilorutawwu8zf.pdf
    • http://tomolijoponix.mypressonline.com/public_financial_management_act.pdf
    • http://usacreditcheck.info/natalewibetazokukakusase0cajm.pdf
    • https://cdn-cms.f-static.net/uploads/4384839/normal_603ee37ff2e26.pdf
    • https://cdn-cms.f-static.net/uploads/4496374/normal_6030695590a20.pdf
    • http://wamawogep.iblogger.org/upsc_cds_form_online.pdf
    • https://cdn-cms.f-static.net/uploads/4444853/normal_5fe9ef08d014b.pdf
    • http://mibikazut.mypressonline.com/24974151225.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://59bb578d-b312-442a-858b-1a1a54b18a6c.filesusr.com/ugd/c79b1c_a3187e665e444f2faca5236f8157d085.pdf?index=true
    • http://purokamutene.rf.gd/arabic_marsiya_of_dawoodi_bohra.pdf
    • https://299bc67c-4c9a-44ea-852c-18f2d39dca40.filesusr.com/ugd/954c8b_c3275b85ebe845569febaa196c701cc7.pdf?index=true
    • https://c6de0af5-2a4c-46da-924c-839bccb102c6.filesusr.com/ugd/5f1f0f_47d8788518ae4bcdae290f94792f9050.pdf?index=true
    • http://riwasepe.epizy.com/32656055182.pdf
    • http://gurabagoderes.atwebpages.com/xoxefirazibuk.pdf
    • http://tipatanakuke.onlinewebshop.net/34026113603.pdf
    • http://siwebojik.epizy.com/33182532279.pdf
    • http://bogalibamadom.myartsonline.com/nazuko.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_off0000fb86.bin
b6003cd73dc8d3507d5a813697ec303188cd268ba40f9795a311b73b489e41b5
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB86 5316 bytes
font_01_sfnt_off00010d73.bin
5862d557ff5899c1b097685c6ae9f3a0564473bc7b265cb4fd7795267fee5286
pdf-font-stream PDF embedded font (sfnt) at offset 0x10D73 11436 bytes