Malicious PDF — malware analysis report

Static analysis result for SHA-256 57218461ba130aea…

MALICIOUS

PDF

76.3 KB Created: 2021-03-13 14:14:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: ea1c324eb6300ff2c3b53a1f5150d52e SHA-1: a1b70a734eb31e805101d98d19e6a137f5f008c7 SHA-256: 57218461ba130aea6b46f6c3018e8853986aeae4d28f8e44af5333e423cf320f
134 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. The document body, though partially corrupted, suggests a lure related to an 'employee warning notice' with a deadline, aiming to trick the user into clicking a link. The embedded URI points to a suspicious domain, likely serving as a landing page for the phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://xezojetit.ru/wix?keyword=employee+warning+notice+email+template PDF link annotation
    • https://cdn.sqhk.co/pujixefan/hqb3ifl/15241542812.pdfIn PDF document text
    • https://jesidovelagira.weebly.com/uploads/1/3/4/7/134705211/201817.pdfIn PDF document text
    • https://cdn.sqhk.co/kejaxedusuk/ejejdjb/fast_save_for_instagram_app_free_download.pdfIn PDF document text
    • http://piwofoterif.sportsontheweb.net/tifikubolewamatilovoberi.pdfIn PDF document text
    • http://walolexokesufa.sportsontheweb.net/vototofatoxotugiwabem.pdfIn PDF document text
    • https://gikanirirexenad.weebly.com/uploads/1/3/0/7/130776133/tejabofozegazuz.pdfIn PDF document text
    • https://zejinimab.weebly.com/uploads/1/3/1/8/131856072/3134dbf0c.pdfIn PDF document text
    • http://rarubife.mygamesonline.org/54066496345.pdfIn PDF document text
    • https://wudajelenap.weebly.com/uploads/1/3/4/4/134470879/d97039a.pdfIn PDF document text
    • https://cdn.sqhk.co/rojozedofaf/jeRjhPS/rr_np_business_development_program.pdfIn PDF document text
    • https://kakifiku.weebly.com/uploads/1/3/5/3/135347754/6923727.pdfIn PDF document text
    • https://cdn.sqhk.co/juxerawabuf/5vjducb/sijukuseze.pdfIn PDF document text
    • https://cdn.sqhk.co/fomeluxilim/vKjjYv8/farulapukopiw.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/bogijexu/pepixinavironosefano.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/luxugem.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/rigafupufoze.pdfIn PDF document text
    • https://777dd155-384c-4f1d-a337-8f27b94bb056.filesusr.com/ugd/1ecdae_8054f4f8354b4c65b55679bf9184a901.pdf?index=trueIn PDF document text
    • http://tanonarimunal.myartsonline.com/16044204391.pdfIn PDF document text
    • https://s3.amazonaws.com/wulotugadag/96523234908.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/44800142644.pdfIn PDF document text
    • https://f37c3615-20b0-4e70-b1e7-2acf34113780.filesusr.com/ugd/1e533a_c48a421b296748b496421ce467b74d96.pdf?index=trueIn PDF document text
    • https://0a3c8164-ddd9-4522-8472-457ce31ece15.filesusr.com/ugd/d32f78_0c8a2b1e7f544e0196094b1b1147fb4e.pdf?index=trueIn PDF document text
    • https://d71fc03c-aea6-48f7-a990-8afffb22108d.filesusr.com/ugd/3de8a6_e8321dfeeb0b47de9c33074d8b63d980.pdf?index=trueIn 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_off0000ec1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC1C 5224 bytes
SHA-256: bc2e76571c807bb944dca13727a472c2c84d7324cdf1fb04512d211bf2c0c1f5
font_01_sfnt_off0000fdec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDEC 10580 bytes
SHA-256: 54ad1083515789807ca6736e8cbf6fc7a70caf1c4a6b34fcc80ae217b55362b7

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