Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9f4c6cce1e13237…

MALICIOUS

PDF

48.8 KB Created: 2020-08-12 04:03:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c86401c49b5205122a0dc48309111c5 SHA-1: 188843911a6afdff4e9c25384eb90a35417b7a43 SHA-256: c9f4c6cce1e1323787d807274655da8da9e1fdb768e08779345b75c5109eb5cf
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm designed to appear as legitimate documentation, but the primary URL redirects to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that leads to the malicious redirector. This indicates a phishing attempt to lure users to malicious infrastructure.

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.com/pify?keyword=arduino+board+manual+pdf
    • http://kazafinul.arabellasheen.co.uk/uploads/1/3/1/4/131406799/5987757.pdf
    • http://dugebimip.henryssports.com/uploads/1/3/0/8/130874050/bobekawez-gufebege-kiwanirebewuruj.pdf
    • http://files.healthymarriagehealthyfamily.com/uploads/1/3/0/7/130739214/tojekevazes.pdf
    • http://files.fionasenton.co.nz/uploads/1/3/0/7/130775431/9255697.pdf
    • http://tovalisu.maigretfamilyfarm.com/uploads/1/3/1/0/131070993/a0fbb4c.pdf
    • https://cdn.shopify.com/s/files/1/0433/7673/8462/files/mijalubajanirunel.pdf
    • https://cdn.shopify.com/s/files/1/0427/9785/8972/files/kentucky_marriage_license_form.pdf
    • https://cdn.shopify.com/s/files/1/0432/7217/5781/files/hillbilly_elegy_chapter_1.pdf
    • https://cdn.shopify.com/s/files/1/0434/7225/7181/files/91235896977.pdf
    • https://cdn.shopify.com/s/files/1/0435/3628/5860/files/gully_erosion_control_measures.pdf
    • https://cdn.shopify.com/s/files/1/0433/9993/8211/files/simple_fruit_smoothie_recipes.pdf
    • https://cdn.shopify.com/s/files/1/0447/3847/8229/files/cp5151_advanced_data_structures_and_algorithms_lecture_notes.pdf
    • https://cdn.shopify.com/s/files/1/0428/6388/6495/files/75638294859.pdf
    • https://cdn.shopify.com/s/files/1/0432/5680/7586/files/calendario_2020_settimane.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nasidobedibugamis.pdf
    • https://cdn.shopify.com/s/files/1/0427/8085/2383/files/tulisaji.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_off000082da.bin
8e6860818dc358235c48a24e0b1fc7d88141c010026ed745bc1ca2a242ebc678		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82DA 5140 bytes
font_01_sfnt_off00009435.bin
2dbf79380301271c90922d147c0989aee8509d571332a46ce795539edcf63b5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9435 9900 bytes

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