Malicious PDF — malware analysis report

Static analysis result for SHA-256 b20695f40722eca7…

MALICIOUS

PDF

59.4 KB Created: 2020-12-01 23:36:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d4f796d12b63035b9f537fc6c05d4a2f SHA-1: 7f4da8d427686a269a3b0fe55bf7fd6342b15165 SHA-256: b20695f40722eca79f858ea5963675aaf600223de37080e7000be7e40e7b5d49
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by a ML classifier and ClamAV. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into visiting a phishing or malware distribution site. The document body, though heavily obfuscated, appears to be a lure related to celebrity photos.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffine.ru/aws?utm_term=actress+anushka+shetty+photos
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/c45bee3c-77f4-4564-8676-542e943197ad/ca_si_thai_thanh.pdf
    • https://s3.amazonaws.com/nonipesikiri/poetry_unit_test_answers.pdf
    • https://uploads.strikinglycdn.com/files/4349f67d-7c62-44d6-96b7-0efab88f985a/devarujun.pdf
    • https://static1.squarespace.com/static/5fc0e627116eb00e3c4beed8/t/5fc1544dfa04221c715135b8/1606505550642/wovimudexogegamatejegesi.pdf
    • https://s3.amazonaws.com/gizonukorad/aa_big_book_step_study_guide.pdf
    • https://uploads.strikinglycdn.com/files/c94673b0-cbe1-4280-acce-466ac48f3038/samsung_artpc_pulse_review.pdf
    • https://static1.squarespace.com/static/5fc0e2a1ec917750a3d7d2c6/t/5fc1b37df3de5e49b5a436d9/1606529918489/6.0_powerstroke_glow_plug_diagram.pdf
    • https://s3.amazonaws.com/zurovajij/convertir_archivos_a_word_i_love.pdf
    • https://uploads.strikinglycdn.com/files/35996a49-8c91-461d-b1be-b94389f829f1/olaf_jg_guide_s10.pdf
    • https://static1.squarespace.com/static/5fc0078111f6a4198480da42/t/5fc1702c3570fb44d138fdd6/1606512685642/big_hero_6_villains_category.pdf
    • https://s3.amazonaws.com/ritoma/kotedu.pdf
    • https://static1.squarespace.com/static/5fc0e844cd1e280355d45049/t/5fc3c09018e72e5fdb4a5be7/1606664337488/lasezalopetopavuwafagebi.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_off0000b098.bin
915ae0b8ed45bd5b447841802d55daaa010897cff168f5e1e03960dc75dc741a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB098 5144 bytes
font_01_sfnt_off0000c21c.bin
76b1da5a0299033fb7d30bf8bd8b51c6461288c0eb504f57d0c76ce18d2ecf97		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC21C 9164 bytes

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