Malicious PDF — malware analysis report

Static analysis result for SHA-256 99f19d190734c743…

MALICIOUS

PDF

39.2 KB Created: 2020-08-25 10:32:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e01afd05a96ab839d4293b81d068219 SHA-1: eaa87e4c635fc3292557a9a79ac5c4cb2811253f SHA-256: 99f19d190734c743c3201f2a1670501a6c3449cfe7c8971c5fd01db3367b1b06
120 Risk Score

Malware Insights

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

The PDF file was flagged for containing a malicious redirector link and a link farm. The primary malicious URL, https://ttraff.ru/pify?keyword=wavefront+obj+models+free, is likely used to redirect users to a malicious site. The document body, though heavily obfuscated, contains this URL and other Shopify links, suggesting a lure to disguise the malicious intent. The presence of numerous external links points to a strategy of distributing malicious content through a network of seemingly benign sites.

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.ru/pify?keyword=wavefront+obj+models+free
    • http://files.heatherhofstetter.com/uploads/1/3/0/7/130740066/tufumekizep-dosom-lalirazogotuf.pdf
    • https://cdn.shopify.com/s/files/1/0428/8249/8716/files/67336297338.pdf
    • https://cdn.shopify.com/s/files/1/0439/9765/9294/files/green_lantern_reading_order.pdf
    • https://cdn.shopify.com/s/files/1/0434/3631/0678/files/bedokovexukojufov.pdf
    • https://cdn.shopify.com/s/files/1/0437/6710/3645/files/mikubufab.pdf
    • https://cdn.shopify.com/s/files/1/0433/5904/3749/files/11430184636.pdf
    • https://cdn.shopify.com/s/files/1/0431/4529/8077/files/lisalirinuduginelikomejop.pdf
    • https://cdn.shopify.com/s/files/1/0431/0892/5600/files/32811938505.pdf
    • https://cdn.shopify.com/s/files/1/0431/7272/4892/files/betuwavetuvunilobavem.pdf
    • https://cdn.shopify.com/s/files/1/0431/6738/3713/files/pupudepate.pdf
    • https://cdn.shopify.com/s/files/1/0437/8047/2984/files/65316981676.pdf
    • https://cdn.shopify.com/s/files/1/0429/5173/7498/files/42485743243.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_off00005af2.bin
89ae715d454ee60e4dc2ebbc5c3fe285e85f861e6b5d3326dc6002d4d935ca7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AF2 5344 bytes
font_01_sfnt_off00006d16.bin
9583e18ce83d6d667224142eb8848d1323c854b37b34f09dd5d697ecd34cdd1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D16 10548 bytes

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