PDF malware analysis — malicious · 8f4cc48145af56d1

MALICIOUS

PDF

55.1 KB Created: 2020-07-30 11:03:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 67dc19a3df55eb8ebbe25b7759b1a12a SHA-1: fd9060f4dcfa59fee7450c5700b793b7ecca68c6 SHA-256: 8f4cc48145af56d19e121cda6093e2618f0a7ccd34c0060b123205bead3844d4

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a large number of embedded links, identified as a link farm, designed to direct users to external websites. One of these links, 'https://ttraff.ru/pify?keyword=aspergillus+spp+pdf', points to known malicious redirector infrastructure. The document body is heavily obfuscated and contains metadata indicating it was generated by wkhtmltopdf, suggesting a programmatic generation of the malicious 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=aspergillus+spp+pdf
- http://files.dianebattistello.com/uploads/1/3/0/7/130739789/0bf1fe13f1cc.pdf
- http://files.nevillegreen.org/uploads/1/3/1/1/131164129/seduwofafonut_worajegabuvodi_fusotupadexupa.pdf
- http://files.portlandharborwatertours.com/uploads/1/3/0/7/130776590/vowosaf_wixikafuj_firurizamiju_bipojigodis.pdf
- http://files.scrippsnorthstar.com/uploads/1/3/0/8/130874026/webus_kokitasumamu_topumoze.pdf
- http://files.lilydermis.com/uploads/1/3/0/7/130775465/rewuki.pdf
- http://files.nevillegreen.org/u
- https://cdn.shopify.com/s/files/1/0433/7002/1014/files/2150835234.pdf
- https://cdn.shopify.com/s/files/1/0432/9160/7190/files/bazumadu.pdf
- https://cdn.shopify.com/s/files/1/0437/2873/2314/files/kobepozo.pdf
- https://cdn.shopify.com/s/files/1/0434/0845/7877/files/somovenusipepuvugop.pdf
- https://cdn.shopify.com/s/files/1/0433/2886/4409/files/wovejitawiri.pdf
- https://cdn.shopify.com/s/files/1/0437/0428/7383/files/lebekomigosuto.pdf
- https://cdn.shopify.com/s/files/1/0430/6200/1821/files/rakobuvapufutezivido.pdf
- https://cdn.shopify.com/s/files/1/0431/4615/0039/files/24082227377.pdf
- https://cdn.shopify.com/s/files/1/0437/0425/4615/files/46577701663.pdf
- https://cdn.shopify.com/s/files/1/0432/1378/3199/files/34475352847.pdf
- https://cdn.shopify.com/s/files/1/0429/0940/1251/files/38631672168.pdf
- https://cdn.shopify.com/s/files/1/0438/2703/6322/files/judarekazixijajewu.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00009b09.bin` `690df10aafff03ca2bd080fcfaf92d6c63cdffe95101643a4a642d3a9e2c3dce`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9B09	4572 bytes
`font_01_sfnt_off0000aaa1.bin` `48fcf5ce45ea2340cc2bf58ab9fe7830e6f2c637b3f4748305182e0c5b9d2866`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAAA1	10676 bytes

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