Malicious PDF — malware analysis report

Static analysis result for SHA-256 94cc62638b6d3cc6…

MALICIOUS

PDF

80.2 KB Created: 2021-04-22 03:03:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7578ad72471782a81b86e908b37ce534 SHA-1: 27b9c0fad1ad12388628de0dfef29f6c9eb51123 SHA-256: 94cc62638b6d3cc69fe9648a8174c0ae7d473fa55e2b3905ec356e0121adc9b4
104 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The document body contains text related to a car model, likely serving as a lure to encourage users to click on embedded URLs. One of the primary URLs, 'https://zajinet.ru/strik?utm_term=2016+corolla+le+specs', is directly associated with the document's content and is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=2016+corolla+le+specs
    • http://gabutetidik.22web.org/vufawanevopenavojupabid.pdf
    • https://static.s123-cdn-static.com/uploads/4443608/normal_5fcb4ab51bf5d.pdf
    • https://cdn.sqhk.co/litigoruf/CTjiRbP/zogopaditudafiwukibonawe.pdf
    • http://pollsexpert.com/backyard_croquet_set_uprur7v.pdf
    • https://cdn.sqhk.co/bitizulokiva/8ifiehf/aztec_coin_pirates_of_the_caribbean_for_sale.pdf
    • http://kevifiregerufug.scienceontheweb.net/soduviforegedobu.pdf
    • https://cdn.sqhk.co/gikunixa/jgfhbtO/glacier_national_park_backpacking_trails_map.pdf
    • http://mujabelor.mywebcommunity.org/wuxun.pdf
    • https://cdn.sqhk.co/zuretagugaf/ggujiou/26203824591.pdf
    • http://luloxijemise.medianewsonline.com/keruse.pdf
    • http://vezukugijisepo.scienceontheweb.net/21440428959.pdf
    • https://cdn-cms.f-static.net/uploads/4409394/normal_603ecfafc7a62.pdf
    • http://gupirigugorixuf.sportsontheweb.net/nawixekavi.pdf
    • http://lightstart.xyz/51754761187f51hl.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jonevojufe.rf.gd/factors_affecting_the_climate.pdf
    • http://pijosufun.myartsonline.com/clases_de_ingles_intermedio.pdf
    • http://gufopexolax.myartsonline.com/jarafugurijoxu.pdf
    • http://lidiremuvuzanas.rf.gd/dulopejutan.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_off0000f67b.bin
00efbbfaa881b5929fead353fb0219285fd5e36e1d113b2f4cd204db93fcb375		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF67B 5312 bytes
font_01_sfnt_off00010896.bin
e4c82e207e181379f4c63dea1bb8a11dd95ebecf55be17bce1d7d23aa1ea8fdc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10896 13144 bytes

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