Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdeb36f3ed82d281…

MALICIOUS

PDF

44.4 KB Created: 2020-11-08 09:26:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eb4af829b9b14d8269afed77c8dd2466 SHA-1: 76751c12530a7b749251a8436ea8c923affd5f12 SHA-256: bdeb36f3ed82d281c94c5d65f4b3ce1fad78a7fcd16d2624b5645004fa721bb7
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged as malicious by an ML classifier and contains a link to a known malicious redirector. This suggests the document is designed to lure users to a malicious website, likely for phishing or malware distribution. The presence of embedded URLs and the critical heuristic firing strongly indicate malicious intent.

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://traffmen.ru/123?keyword=age+of+jordan+fisher
    • https://zadumeredevasax.weebly.com/uploads/1/3/1/4/131453870/9069058.pdf
    • https://wipomozexabezi.weebly.com/uploads/1/3/0/7/130776841/deneb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/kokesatodixon/sinebodafuvofolizepepoli.pdf
    • https://uploads.strikinglycdn.com/files/c60fc51a-c230-43ae-aa91-65a4d83a9007/japifojod.pdf
    • https://s3.amazonaws.com/kawotexulozax/puzudizamagokagozexizid.pdf
    • https://s3.amazonaws.com/tejuvonixag/gadibabubamujevarufu.pdf
    • https://s3.amazonaws.com/rezugekolaba/what_jcpenney_stores_are_closing_in_ohio.pdf
    • https://s3.amazonaws.com/wazorixekunafob/71890342347.pdf
    • https://s3.amazonaws.com/ratixifo/guide_me_o_thou_great_jehovah_sda_hymnal.pdf
    • https://uploads.strikinglycdn.com/files/81e2e779-a8f6-4f87-8f65-db7d2806bc9e/doladanibisagoludopo.pdf
    • https://uploads.strikinglycdn.com/files/5f5623e9-7e9e-459c-a3e5-9bd569575ab8/infiniti_middle_school_website.pdf
    • https://s3.amazonaws.com/nafoxuda/19319352869.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063f3.bin
407ae1a93836dc80f19560c3ce80a6620a3044638be2e947752d1cc63ca93aa5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63F3 4908 bytes
font_01_sfnt_off0000749a.bin
f2c23c12524ed32db27b403484b517e862159953f694855474db3258f62dea33		 pdf-font-stream PDF embedded font (sfnt) at offset 0x749A 10232 bytes
font_02_sfnt_off0000972b.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x972B 4324 bytes

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