Malicious PDF — malware analysis report

Static analysis result for SHA-256 d882cd502455dc69…

MALICIOUS

PDF

40.8 KB Created: 2020-08-01 05:08:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a8f0da2056681693000236be0f6174c SHA-1: 338f9d8380512103211f31270c4d75e5d0873596 SHA-256: d882cd502455dc69c0ca7170a3abf160d6f64957bdf5b5f11ffcb2559470db4a
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a tutorial for a 'simple calculator java'. The document also exhibits characteristics of a link farm, with numerous embedded links to other PDFs hosted on various domains. The primary malicious intent appears to be redirecting the user to potentially harmful content via the ttraff.com URL.

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=simple+calculator+java
    • http://files.martinjbuckley.co.uk/uploads/1/3/2/6/132696483/3715183.pdf
    • http://files.cjhookah.com/uploads/1/3/1/4/131413718/zobujozaxuzukazutepu.pdf
    • http://files.oxfordclimatesociety.com/uploads/1/3/1/8/131872105/xewis-vugan-buforudanaxe-zemetevo.pdf
    • http://files.gorksgoodfilla.com/uploads/1/3/0/8/130815228/3290323.pdf
    • https://cdn.shopify.com/s/files/1/0433/1703/5166/files/nibiravazizesefepubex.pdf
    • https://cdn.shopify.com/s/files/1/0432/2571/0750/files/68168142699.pdf
    • https://cdn.shopify.com/s/files/1/0431/5601/3205/files/joreketebovana.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/63016720996.pdf
    • https://cdn.shopify.com/s/files/1/0435/9372/8158/files/the_association_greatest_hits.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pafinekumukomotutawewokab.pdf
    • https://cdn.shopify.com/s/files/1/0433/4387/2153/files/nezaxasigadewikaresurer.pdf
    • https://cdn.shopify.com/s/files/1/0429/6271/4773/files/39363908707.pdf
    • https://cdn.shopify.com/s/files/1/0429/1470/9670/files/73923846714.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tanedikefiresemur.pdf
    • https://cdn.shopify.com/s/files/1/0430/3467/3305/files/90931226836.pdf
    • https://cdn.shopify.com/s/files/1/0431/4575/6821/files/sivuvarenuzimowijavefatod.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_off00006251.bin
7801afb5a82c7aea19dbabf841a3fd21c571295e0ef996adc75e9303ea22ff0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6251 5140 bytes
font_01_sfnt_off000073c4.bin
f6821cd1e3e76e5446bfed44c386a329c3c1e1ade181f7400e2cb396be6e85b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73C4 10136 bytes

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