Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ff5954f0817bbd2…

MALICIOUS

PDF

59.6 KB Created: 2020-12-14 18:57:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: b5d4783fb2cd241c03d426ee077c1ff7 SHA-1: 0cc98c7f580b782c74d4897423287894d6accab9 SHA-256: 5ff5954f0817bbd2b65e6734bff285106b066afd84044e424c06f1c4e89a112e
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to product advertisements.

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://traffset.ru/123?utm_term=logitech+hp+720p PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/601bf67b-01be-4cc4-a021-b3730d442fa4/vimopa.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e7b740f1034a5ca8d025/t/5fc560e53570fb44d1b6faab/1606770917794/68503574657.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/481123c0-7264-4b14-a6db-4de8b6e0ab5d/bivelasulojixijepur.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc58fe89955c744b55b026c/t/5fd16d0df2ee360040ed4809/1607560462232/wabinuvawexazasap.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc64fea085bf90c0e22058c/t/5fca66842dd5445090c94fd4/1607100037279/popular_ringtones_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17b03f53-f5e3-4c54-9ddc-7a9e63b60ed0/gowagaxatojus.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1858bf7cf8c75402f5531/t/5fca7f89a08b9342fa9cc2b5/1607106443347/live_viewers_for_twitch.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc52f513398ff751549c769/t/5fcd70a783d2ac65cc281e89/1607299239965/noxikekekemipa.pdfIn PDF document text
    • https://s3.amazonaws.com/vekodupiwarobi/zamexared.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f11e83e-586b-4fdd-8a60-c625b94fb21b/el_microscopio_optico.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc36d523dfdd95b60e52950/t/5fc6a8911972c46e3c89d08a/1606854802220/crypto_capitalist_idle_games_adventure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/598a1c98-2822-4ab7-acc0-68c878f940ce/animal_farm_poster_project.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce55c098f154499f378bae/t/5fd08a310c0c9b10ab0a8b62/1607502387811/vanofiwubuv.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_off0000ad62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD62 4972 bytes
SHA-256: a9b22d8d1a33f86da5306f32ab11f1439817dd540c4e27fb3db8d6d6ea031309
font_01_sfnt_off0000be6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE6E 10560 bytes
SHA-256: 3cfe2c7302a50c92145121e0300561e065a0b6f5fc117ba8761136450f575f9f

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