Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b078cdf724d94cd…

MALICIOUS

PDF

74.4 KB Created: 2021-03-15 01:12:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 6c67c7daf6dc31c088d4b17ca532c77f SHA-1: a8cd9ce1dbb80032f9bead30552bba997ae01f5c SHA-256: 7b078cdf724d94cd8b4791faabd834de35433c32fdb59271d3ccbef768b9c1f6
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://zajinet.ru/strik?utm_term=how+to+clean+a.coffee+maker', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to cleaning a coffee maker, aligning with common social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://zajinet.ru/strik?utm_term=how+to+clean+a.coffee+maker PDF link annotation
    • http://jivusibofonefud.mygamesonline.org/a_knight_s_tale_script.pdfIn PDF document text
    • http://bogipeborowe.sportsontheweb.net/wing_chun_books_free_download.pdfIn PDF document text
    • http://tebapewulodafe.getenjoyment.net/rugijonufogori.pdfIn PDF document text
    • http://arboozfilm.com/technical_analysis_books_in_hindi4wz1e.pdfIn PDF document text
    • http://leree4.club/bhagavad_gita_in_gujarati_free9ays9.pdfIn PDF document text
    • http://world-wild-shop.com/printable_hedgehog_bookmarksz2b2e.pdfIn PDF document text
    • http://worabipupe.mypressonline.com/demevaletemijugokozam.pdfIn PDF document text
    • http://wodedunor.22web.org/kenwood_ts-570dg_power_mod.pdfIn PDF document text
    • http://bestplacefor.rest/baal_veer_song_full_hde7wjf.pdfIn PDF document text
    • http://nupesupo.mypressonline.com/denon_avr_391_subwoofer_setup.pdfIn PDF document text
    • http://bewujasixi.mywebcommunity.org/oral_bioavailability.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kotidox/27255116288.pdfIn PDF document text
    • http://zevesijuduma.atwebpages.com/15485058185.pdfIn PDF document text
    • https://s3.amazonaws.com/gixirojozogufux/99360379875.pdfIn PDF document text
    • https://s3.amazonaws.com/naxizugenabi/calculating_variance_and_standard_deviation.pdfIn PDF document text
    • http://dirazonun.myartsonline.com/jelujomomuxudomaban.pdfIn PDF document text
    • http://jogubemiviju.rf.gd/55723651780.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaporam/lattimore_iliad_opening.pdfIn PDF document text
    • http://xulalozuvemuve.rf.gd/curriculum_vitae_espaol.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5D9 4996 bytes
SHA-256: 841bb6543936e468bcbf76abea16fc0db30ca71292890f3ab7691e28f71e5f9b
font_01_sfnt_off0000f6dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6DC 11040 bytes
SHA-256: 7ddd2367b09f0e0f05838f6c1559fb0ab19c7f9c1271947803ff45bfc3741f52

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