Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8d2fce9c39f6818…

MALICIOUS

PDF

40.3 KB Created: 2020-08-07 16:14:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ffbe225b915937f1f742cc036ab5b053 SHA-1: 89fe688f23a0800204ccb3d759c6b639e5a8b4cc SHA-256: a8d2fce9c39f68185db933d2e338d7c055a215ca0b41abbfc893877d87597950
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to a redirector service. This indicates a link farm or redirection attack designed to funnel users to malicious sites. The primary malicious URL identified is https://ttraff.ru/pify?keyword=posiciones+y+cavidades+del+cuerpo+humano+pdf. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

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=posiciones+y+cavidades+del+cuerpo+humano+pdf
    • http://files.plazaproduce.com/uploads/1/3/1/3/131398145/164a7.pdf
    • http://difoz.mrsmoothbeatz.com/uploads/1/3/1/6/131637309/7b34fd57c.pdf
    • http://files.radyo-filipino-australia.com/uploads/1/3/0/7/130738841/fazilalu.pdf
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/bhendi_bazaar_redevelopment_plan.pdf
    • https://cdn.shopify.com/s/files/1/0434/0023/3112/files/rebaxoxokivomifogalolorib.pdf
    • https://cdn.shopify.com/s/files/1/0428/2017/3983/files/angie_martinez_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/4273/4237/files/40242926331.pdf
    • https://cdn.shopify.com/s/files/1/0431/6528/6566/files/jevugipu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8572/5857/files/dedevinozajupakuzumotavoj.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/17721531589.pdf
    • https://cdn.shopify.com/s/files/1/0433/5009/8085/files/totedogaxotibe.pdf
    • https://cdn.shopify.com/s/files/1/0432/1555/2672/files/84002154898.pdf
    • https://cdn.shopify.com/s/files/1/0433/1234/9334/files/alice_in_wonderland_partition_piano.pdf
    • https://cdn.shopify.com/s/files/1/0440/3652/2149/files/tomixoxeg.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_off00005c61.bin
c5125be91e92cda2fcc1683f3f81fb0ba77690bba24b1b20a60303ce906a5fe2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C61 5560 bytes
font_01_sfnt_off00006f30.bin
b01ebe3bef6265ff70c15166499166ed7c26618d5f55c4a52d16c40a78791022		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F30 10900 bytes

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