Malicious PDF — malware analysis report

Static analysis result for SHA-256 582a1e700c1f9071…

MALICIOUS

PDF

40.2 KB Created: 2020-07-24 06:30:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77b47fba865b407c374796dd30fe3a60 SHA-1: 7c2969c0cf2d3144cc562bc510f0c553d46ab17f SHA-256: 582a1e700c1f9071447237ee4a43a32829bf1a46ab3b989585b73a5ba4601ca9
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with the primary heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be related to the embedded URLs. The presence of a link farm suggests an attempt to drive traffic to potentially malicious or SEO-manipulated content.

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=lotto+boyzz+afrobbean+ep
    • http://files.mattforvt.com/uploads/1/3/1/1/131164440/a4bb7a.pdf
    • http://files.floraskids.org/uploads/1/3/0/8/130814339/8136639.pdf
    • http://files.australiannationalrabbitcouncil.com/uploads/1/3/0/7/130739165/6826420.pdf
    • http://files.libertylawgroupla.com/uploads/1/3/1/4/131407737/paken.pdf
    • https://cdn.shopify.com/s/files/1/0431/1459/4466/files/53947062245.pdf
    • https://cdn.shopify.com/s/files/1/0434/2556/2785/files/76203776271.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/83759083977.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rirolor.pdf
    • https://cdn.shopify.com/s/files/1/0429/3551/7337/files/82685357732.pdf
    • https://cdn.shopify.com/s/files/1/0435/4496/9367/files/1731096186.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ruketisoren.pdf
    • https://cdn.shopify.com/s/files/1/0437/3273/0008/files/5000060900.pdf
    • https://cdn.shopify.com/s/files/1/0430/5548/0981/files/63436086177.pdf
    • https://cdn.shopify.com/s/files/1/0433/3246/8890/files/sonibowakosatexoxo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/gosifuv.pdf
    • https://cdn.shopify.com/s/files/1/0431/2226/2178/files/morejiz.pdf
    • https://cdn.shopify.com/s/files/1/0437/9148/3032/files/betesutigimesexilero.pdf
    • https://cdn.shopify.com/s/files/1/0432/5592/2852/files/59918032157.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_off000060ef.bin
812730cb4a75002d92c3d95efcdd195e612cdbe6ea74c8611b8a1cf8a9ded368		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60EF 4660 bytes
font_01_sfnt_off000070d8.bin
d7d100792e71e4112677aa2db7983a4b6736b93031a40cfafb8952fd080d050b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70D8 10040 bytes

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