Malicious PDF — malware analysis report

Static analysis result for SHA-256 02745ea48e9a0ce0…

MALICIOUS

PDF

40.3 KB Created: 2020-11-01 23:14:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: f11caeff0d00ae6506321c9ae7afeea3 SHA-1: 4de4fe94de40daf9d404b70fcdb9c4b1e491f9e3 SHA-256: 02745ea48e9a0ce07e32e926dc4775eecf09e6c0fefb7d0400aa263f4fa2a0e8
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also strongly flagged this PDF as malicious. The embedded URL is the primary indicator of malicious intent, likely serving as a lure for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/aws?keyword=valentine+s+day+2017+game In PDF document text
    • https://zusaneji.weebly.com/uploads/1/3/0/8/130813769/23d3953eae.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fec6e93-a62b-4816-ac17-a3b09ca7995c/96809295654.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/merakasadudutid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1229e1f-7788-4bf3-aaa6-6688da29c268/libra_daily_horoscope_ganesha.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f8c0789-db58-419f-becc-ff92bcd47e0f/24009035060.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/push_up_plank_shoulder_taps.pdfIn PDF document text
    • https://s3.amazonaws.com/ratixifo/teziku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9f94fd8-fd1d-4ae1-8f16-302853c0c497/61601919743.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c8a7bcf-b6b3-4438-96ae-1073733aaa4d/uci_list_of_clubs.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_off00005bfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BFB 5520 bytes
SHA-256: cac3cb2d4deacb630096dc32b26f92505fbc751483f4485f11b1b35cdd0f1a34
font_01_sfnt_off00006ecc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ECC 10648 bytes
SHA-256: 34c2aa4b3408a28b5d99ba3ce4c1855a5a48a2ecb62f9fda7b09a53eb08b4d3c

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