Malicious PDF — malware analysis report

Static analysis result for SHA-256 307085c405ef1c26…

MALICIOUS

PDF

76.8 KB Created: 2021-02-22 06:09:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: d7222280e8713f19128d9f4df882c2a9 SHA-1: b799d31b8868bd5bec5dd3a03a069ffb2003d93b SHA-256: 307085c405ef1c26d2d0aaab98702dece688fedff9f528d485ffcd2c4bde4ed9
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 phishing attempt. The document body, though heavily obfuscated, contains references to 'Dewalt dcd771c2 specs' and the embedded URI points to a suspicious domain, likely intended to redirect the user to a malicious site. No scripts were extracted, but the presence of an external URI suggests a phishing lure.

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://maypoin.ru/aws?utm_term=dewalt+dcd771c2+specs PDF link annotation
    • https://vugalemudapitos.weebly.com/uploads/1/3/1/1/131164275/7673024.pdfIn PDF document text
    • https://pidakobanaxob.weebly.com/uploads/1/3/4/4/134463411/niximenitafawa.pdfIn PDF document text
    • https://cdn.sqhk.co/tororukiwuri/Dhh09U4/dikezaxil.pdfIn PDF document text
    • https://xolipesu.weebly.com/uploads/1/3/4/6/134672505/jinopatugubixi.pdfIn PDF document text
    • https://cdn.sqhk.co/womawuxinuge/JiahcDa/redasewagag.pdfIn PDF document text
    • https://cdn.sqhk.co/vavewiminiv/dgghiJS/amazon_prime_video_app_windows_10.pdfIn PDF document text
    • https://kizofirelurok.weebly.com/uploads/1/3/1/6/131606598/fapodowojezi.pdfIn PDF document text
    • https://cdn.sqhk.co/tomubozes/ijhaLc0/my_hero_academia_smash_tap_english.pdfIn PDF document text
    • https://cdn.sqhk.co/runudori/7PNhhic/72355128055.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/senodiw/1796630291.pdfIn PDF document text
    • https://s3.amazonaws.com/xakajoziwibi/quaternary_structure_of_proteins_information.pdfIn PDF document text
    • https://s3.amazonaws.com/xulikamul/sogorutujerabiwazarano.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/pelarifuwobawezusefolas.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/wilanifiwurovu.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_off0000efb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFB9 5328 bytes
SHA-256: 2c405ac66bdac659ee14027e3bdcd7004cec78b2547769bf3bf87cfa787971cb
font_01_sfnt_off00010217.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10217 10768 bytes
SHA-256: 326345724e58e6705750e3d4c6df4746405ccfe3c76b42f165dd4682c0027cb3

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