PDF malware analysis — malicious · d02ae49de2ce9c9a

MALICIOUS

PDF

60.8 KB Created: 2020-08-04 07:16:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9b5c6a9931c367bf84b7857f231c83e6 SHA-1: 3d9378ad57d488b982534eb8de5b711bbbebf60e SHA-256: d02ae49de2ce9c9a60b252bb230fe9051773abd204c80bc2312c35b938fa8657

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=arabic+language+free+download+pdf'. This URL is likely used to redirect users to malicious content. The document body, though heavily obfuscated, also contains this URL and other PDF links, suggesting a link farm or SEO poisoning tactic to attract victims. The presence of numerous Shopify-hosted PDF links, some marked as benign and others unknown, indicates a broad distribution effort.

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=arabic+language+free+download+pdf
- http://kemojim.indianmarriagebureau.com/uploads/1/3/2/6/132681670/fc60eef47a5898.pdf
- http://files.wbc2018.org/uploads/1/3/0/8/130813366/4a59998.pdf
- http://files.anthopoulin.com/uploads/1/3/0/8/130874264/gixovu.pdf
- https://cdn.shopify.com/s/files/1/0433/7228/2008/files/somumetofaxadafunajuwodi.pdf
- https://cdn.shopify.com/s/files/1/0428/5802/1027/files/votelusojewamamoxef.pdf
- https://cdn.shopify.com/s/files/1/0438/6209/8085/files/43740362720.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bibekejufalakudogaloseja.pdf
- https://cdn.shopify.com/s/files/1/0436/0136/3107/files/wipewavigogipagaw.pdf
- https://cdn.shopify.com/s/files/1/0433/9272/9246/files/39611863508.pdf
- https://cdn.shopify.com/s/files/1/0429/8512/8099/files/94196779639.pdf
- https://cdn.shopify.com/s/files/1/0434/2883/9586/files/mp3_hosting_direct_link.pdf
- https://cdn.shopify.com/s/files/1/0431/2930/7287/files/90922406119.pdf
- https://cdn.shopify.com/s/files/1/0433/2378/5370/files/kotefizatazofewuw.pdf
- https://cdn.shopify.com/s/files/1/0432/0496/8603/files/26614308639.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_005_off0000b18b.bin` `f20ceecad6328b8057708aacbde260e918ae5d55d9f3229093f2c6b012da9d63`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xB18B	30060 bytes
`font_00_sfnt_off00006ecb.bin` `7677d2ae59ec560e1462b8674f21649b514d64cd9d46d2b6480ff6538600083a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6ECB	5368 bytes
`font_01_sfnt_off00008127.bin` `799d5b95c9ed4adad9fa84c9930e7c4a00af91e29cb46c2aa0f451970a3b5338`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8127	15756 bytes

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