Malicious PDF — malware analysis report

Static analysis result for SHA-256 42a8f5088636ac82…

MALICIOUS

PDF

66.7 KB Created: 2021-03-01 19:10:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: b20c93ff94501646f6b0a57f3039bce6 SHA-1: 231101ca0c0d7836ead284995098d9eaf1268e4d SHA-256: 42a8f5088636ac821dc62ab480c55ad6e15a0dd4c11448b174efcf09bb1ab360
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The document body, though heavily obfuscated, suggests a lure related to 'worksheet packet' and 'simple machines', 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://jumiwimov.ru/wix?keyword=worksheet+packet+page+3+simple+machines PDF link annotation
    • https://cdn.sqhk.co/letabuner/hhnhfow/dice_shred_slice_vegetable_chopper.pdfIn PDF document text
    • https://cdn.sqhk.co/zogobadakedu/cyaejj9/xmeye_app_for_windows_phone.pdfIn PDF document text
    • https://cdn.sqhk.co/sosobita/aaRPJic/amazon_relay_carrier_setup.pdfIn PDF document text
    • https://cdn.sqhk.co/vitimosugu/ibMZhcX/77914038704.pdfIn PDF document text
    • https://cdn.sqhk.co/tazuxalana/epgh0je/45160479564.pdfIn PDF document text
    • https://cdn.sqhk.co/loganidob/jiknQjg/zilaxagolu.pdfIn PDF document text
    • https://cdn.sqhk.co/jivazufevi/c1KgiFU/93332717782.pdfIn PDF document text
    • https://cdn.sqhk.co/tumowara/qZihjeq/big_joe_fruit_slice_pool_float_watermelon.pdfIn PDF document text
    • https://cdn.sqhk.co/tinolaseja/gvrgfgg/skin_editor_for_mcpe_apk.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/jepinebawo/windows_10_full_version_free_2018.pdfIn PDF document text
    • http://wujedulagux.rf.gd/28239651582.pdfIn PDF document text
    • https://s3.amazonaws.com/xakajoziwibi/how_to_reference_a_cell_in_excel_table.pdfIn PDF document text
    • http://reluwiz.epizy.com/update_android_9_samsung_a8.pdfIn PDF document text
    • https://s3.amazonaws.com/jedobufudajewu/43472220030.pdfIn PDF document text
    • https://s3.amazonaws.com/xiwevitox/97176411237.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_off0000c93a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC93A 5588 bytes
SHA-256: 85b68c920a3abccfd8f87077b0a0ddc0e41eaeaf920c47af76d9b22c3b736c49
font_01_sfnt_off0000dc24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC24 9824 bytes
SHA-256: 3c6f4450d29474a6d7ebaeddfd96663f0cefa9d2577c59b73506b9628b324cb2

Open this report in the interactive analyzer, or submit your own file for analysis.