Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d3d7ca589a61852…

MALICIOUS

PDF

41.0 KB Created: 2020-08-18 19:56:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68d3b7915ac58dc7cab962c1101d77ce SHA-1: 429b4870c89f51051432b62acfb6f7703032eb85 SHA-256: 3d3d7ca589a618529e8ba155a036b13b3d775332c3603342967671457c456cd4
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though partially corrupted, contains text related to 'Cache cleaner android' and includes the malicious URL. The file also contains a PDF link farm heuristic, indicating it is designed to host numerous external links, likely for SEO manipulation or to distribute further malicious content. The primary malicious URL is used as an IOC.

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.com/pify?keyword=cache+cleaner+android+2.+3.+6
    • http://zateb.smalltimerock.com/uploads/1/3/1/1/131164557/9fe2290a14537.pdf
    • https://cdn.shopify.com/s/files/1/0431/8904/3358/files/90954693786.pdf
    • https://cdn.shopify.com/s/files/1/0435/3474/5760/files/duxete.pdf
    • https://cdn.shopify.com/s/files/1/0437/7464/0286/files/gebufelivox.pdf
    • https://cdn.shopify.com/s/files/1/0430/5318/7223/files/koxoxumapakojuxomiwobopad.pdf
    • https://cdn.shopify.com/s/files/1/0439/2471/7723/files/35490279961.pdf
    • https://cdn.shopify.com/s/files/1/0433/9888/9635/files/mibetagimisulup.pdf
    • https://cdn.shopify.com/s/files/1/0435/6970/9217/files/6555706867.pdf
    • https://cdn.shopify.com/s/files/1/0438/3562/1526/files/vobalokurejati.pdf
    • https://cdn.shopify.com/s/files/1/0428/7909/0854/files/xovaxatuforiwimupatov.pdf
    • https://cdn.shopify.com/s/files/1/0430/9945/5642/files/38267661642.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.

FilenameKindSourceSize
font_00_sfnt_off000056f4.bin
092b9f99db43d68a7003389f6d07501dee1f82e433e9c802f15379ce7363fa43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56F4 5060 bytes
font_01_sfnt_off0000680b.bin
533c1fbdd9b78082c4943e4cc36992c0a391f39fa83b3d45f9fbbfb3f76dcf28		 pdf-font-stream PDF embedded font (sfnt) at offset 0x680B 9836 bytes
font_02_sfnt_off0000898e.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x898E 4324 bytes

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