Malicious PDF — malware analysis report

Static analysis result for SHA-256 bca296d0ea0a39a5…

MALICIOUS

PDF

47.0 KB Created: 2020-08-15 07:29:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01d31ab0f095fbee362535a5c609330d SHA-1: 6751eec41465ba90a3d5e616e785bc8ca7cf2359 SHA-256: bca296d0ea0a39a590389d509c3d4fa2cc903a8091aeec5e127fd98448200554
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, which is indicative of a link farm. One of the primary links, 'https://ttraff.ru/pify?keyword=dd+free+dish+satellite+guide+setting+2019', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to satellite guides and the malicious URL, suggesting a lure to drive traffic to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=dd+free+dish+satellite+guide+setting+2019
    • http://files.lightningstalkerphotos.com/uploads/1/3/1/3/131384306/guxodeloweloviwum.pdf
    • http://fuferabi.hinotefarms.com/uploads/1/3/1/8/131871478/762a79dc.pdf
    • http://dozedajo.avalonlinenrental.com/uploads/1/3/2/8/132814930/wofitavusiro-ladofubebexa.pdf
    • http://files.lynabodiesfitness.com/uploads/1/3/1/1/131164023/9bce83388bc2.pdf
    • http://files.masksofthegoddess.com/uploads/1/3/1/4/131437670/da2cc524.pdf
    • https://cdn.shopify.com/s/files/1/0435/1547/8176/files/vovijexedowu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8951/7978/files/kozufagidoribegel.pdf
    • https://cdn.shopify.com/s/files/1/0428/0533/0083/files/1471460269.pdf
    • https://cdn.shopify.com/s/files/1/0448/3943/6449/files/61193187511.pdf
    • https://cdn.shopify.com/s/files/1/0431/0332/2269/files/36627223788.pdf
    • https://cdn.shopify.com/s/files/1/0431/6305/8340/files/amazon_echo_instruction_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/3825/2957/files/96663903348.pdf
    • https://cdn.shopify.com/s/files/1/0431/5355/5610/files/lilazuwiv.pdf
    • https://cdn.shopify.com/s/files/1/0429/8525/9159/files/makalah_abortus_kompletus.pdf
    • https://cdn.shopify.com/s/files/1/0430/5738/1530/files/37254735499.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_off000078ec.bin
22ebb529807a1a33289a8da4aa1a26643a8270111fcef23d4cdcbf555c86bae5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78EC 5652 bytes
font_01_sfnt_off00008c21.bin
8732020a2184431ed39ce25ec7bbe6612af4675850182ba07c6dae1f3bf3f9c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C21 10232 bytes

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