Malicious PDF — malware analysis report

Static analysis result for SHA-256 8550be52b29b915a…

MALICIOUS

PDF

42.0 KB Created: 2020-10-30 11:32:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 25c33d780282e979babc84c7f71ef95e SHA-1: 147233cc453369516eae719aae5987c2f3b22783 SHA-256: 8550be52b29b915a8d37a5db4856cd7f9672bd3707e2cf5704f9641a1720b609
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which point to known malicious redirectors or link farms. The primary malicious URL identified is 'https://gettraff.ru/123?keyword=smoking+cornish+hens+on+a+traeger'. The document's structure and the presence of numerous external links suggest an attempt to direct users to potentially harmful websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/123?keyword=smoking+cornish+hens+on+a+traeger
    • https://vuzevarezevarot.weebly.com/uploads/1/3/0/7/130740461/didus-zafuvij.pdf
    • https://lonodoxelu.weebly.com/uploads/1/3/4/3/134305804/sarufobime.pdf
    • https://fexatawolev.weebly.com/uploads/1/3/4/4/134445796/7535292.pdf
    • https://dijizuwuke.weebly.com/uploads/1/3/3/9/133999270/talazaxaz.pdf
    • https://sesuwulot.weebly.com/uploads/1/3/1/4/131438847/532013.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/8ede7e0b-7179-4f0b-acfe-7e045d6f3efd/60560861103.pdf
    • https://s3.amazonaws.com/gupuso/30444561136.pdf
    • https://uploads.strikinglycdn.com/files/fd7d67a1-c3f6-495b-97fb-8b18116ce1d8/16414270895.pdf
    • https://cdn.shopify.com/s/files/1/0500/9847/1073/files/sesulezaparalavure.pdf
    • https://s3.amazonaws.com/zidosozawok/aadhar_card_form_in_kannada.pdf
    • https://s3.amazonaws.com/tabobujimo/caffeine_citrate_davis.pdf
    • https://s3.amazonaws.com/jojitagifuva/4535922277.pdf
    • https://cdn.shopify.com/s/files/1/0500/4017/6793/files/best_free_android_music_organizer_app.pdf
    • https://uploads.strikinglycdn.com/files/0698f980-203c-4837-ab41-a7c68eae59c2/15750650507.pdf
    • https://cdn.shopify.com/s/files/1/0268/8525/9456/files/classic_style_rpg_android_game.pdf
    • https://uploads.strikinglycdn.com/files/b4ed67d3-7f5e-4123-8210-ce9c495bc827/kern_transferencia_de_calor_descargar.pdf
    • https://cdn.shopify.com/s/files/1/0502/3527/7490/files/political_world_map_download.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_off00006647.bin
48b5f6a899ea863cca101c7871aa27d7c765ff44349e59c046bf61fc8bd2b2e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6647 5348 bytes
font_01_sfnt_off0000784d.bin
b0e4bcb9056cc54e8c8eea3d18ec70ef90163eb809b4973b758ce540daad7772		 pdf-font-stream PDF embedded font (sfnt) at offset 0x784D 10272 bytes

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