Malicious PDF — malware analysis report

Static analysis result for SHA-256 51b72dfecf051d65…

MALICIOUS

PDF

40.0 KB Created: 2020-08-21 23:27:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 964336c8c16430da5dfe3b57061e7f28 SHA-1: a1f98fc2e587fd0b32d1540ec233472d3e6fd64b SHA-256: 51b72dfecf051d6508b2e96cab7d7eda6d4d219f3853c2baabb4c5d8f8d54b31
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a link that redirects to a malicious URL, disguised as a product listing for a 'corrugated roof sheeting machine'. This is further supported by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics, indicating a tactic to drive traffic to potentially harmful sites. No scripts were extracted, but the embedded URLs and heuristics strongly suggest a phishing or redirection attack.

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.
  • 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.
  • 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://ttraff.cc/pify?keyword=corrugated+roof+sheeting+machine+for+sale
    • http://gimedit.artdame.com/uploads/1/3/1/6/131636612/5419039.pdf
    • http://loviz.cinestar.org.uk/uploads/1/3/0/9/130969205/tanesaniwalanog-wekerifazo.pdf
    • https://cdn.shopify.com/s/files/1/0432/6188/6627/files/9575676750.pdf
    • https://cdn.shopify.com/s/files/1/0463/9316/3931/files/madufekadotogufezixo.pdf
    • https://cdn.shopify.com/s/files/1/0430/7625/5897/files/nice_guidelines_post_traumatic_stress_disorder.pdf
    • https://cdn.shopify.com/s/files/1/0437/9826/6016/files/how_do_you_dump_games_on_3ds.pdf
    • https://cdn.shopify.com/s/files/1/0434/9342/5316/files/ximagixivofotujaturubepe.pdf
    • https://cdn.shopify.com/s/files/1/0437/3191/0821/files/bombay_dyeing_bed_sheets_king_size_dimensions.pdf
    • https://cdn.shopify.com/s/files/1/0441/2581/4936/files/82870631601.pdf
    • https://cdn.shopify.com/s/files/1/0431/0063/5290/files/kindle_paperwhite_legge_formato_epub.pdf
    • https://cdn.shopify.com/s/files/1/0431/8475/0743/files/neurofibromatosis_tipo_1_pediatria.pdf
    • https://cdn.shopify.com/s/files/1/0433/8001/5262/files/lamemaguxorojixede.pdf
    • https://cdn.shopify.com/s/files/1/0429/9446/6969/files/prevencin_y_control_del_cncer_de_cuello_uterino.pdf
    • https://cdn.shopify.com/s/files/1/0431/8432/4770/files/business_english_pre-_intermediate_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0439/2094/9403/files/15361347345.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d47.bin
6c6df2a9e7575f548bdfdd4ee9f0f654ab79e4796bb134e115a900eb9d6a6307		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D47 5340 bytes
font_01_sfnt_off00006f49.bin
491e50842cf487856a1bc70cc8597016c39ee049e7239b1219df7709998ccc19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F49 10420 bytes

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