Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d159ca6aa62a0be…

MALICIOUS

PDF

43.4 KB Created: 2020-10-16 13:00:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a2c9547aba1b66d9f80bcabdecfa513c SHA-1: 422f2832e38dbd08ccf22ed99dc80290b18f1e62 SHA-256: 8d159ca6aa62a0bee2cd5dfa8f636b7c5da8f4616626f89b47561303a661c7d2
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for malicious redirector links and a link farm, indicating a deceptive content structure. The embedded URL and document body text both point to a lure related to "Pokemon go hack", designed to entice clicks. The primary malicious URL identified is ttraff.link, which redirects to a page containing a large number of other PDF links, likely for SEO poisoning and traffic generation.

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.link/123?keyword=pokemon+go+hack+android+play+store
    • https://cdn-cms.f-static.net/uploads/4368266/normal_5f87ba270ff7c.pdf
    • https://cdn-cms.f-static.net/uploads/4365660/normal_5f87116a50a14.pdf
    • https://cdn-cms.f-static.net/uploads/4373768/normal_5f88f402eb29b.pdf
    • https://cdn-cms.f-static.net/uploads/4366031/normal_5f8755cc633ea.pdf
    • https://cdn-cms.f-static.net/uploads/4369160/normal_5f88bc228a2cd.pdf
    • https://rakamukomegu.weebly.com/uploads/1/3/2/6/132681656/linisimiwovane_mewomajudam_nojupogifuvuxef.pdf
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/kadupe_ripovu_jozovagazemewe.pdf
    • https://lajojixuvoporor.weebly.com/uploads/1/3/0/7/130738555/donuzeka_jefesafereman.pdf
    • https://ridolagu.weebly.com/uploads/1/3/0/7/130775195/5074999.pdf
    • https://gusumadanu.weebly.com/uploads/1/3/2/6/132695601/zesebu-tezegige-sonawajubidep-jekijosozurajoz.pdf
    • https://cdn-cms.f-static.net/uploads/4365998/normal_5f87171ed94f9.pdf
    • https://cdn-cms.f-static.net/uploads/4366325/normal_5f87162b8c7e4.pdf
    • https://cdn-cms.f-static.net/uploads/4366304/normal_5f88b2af5021d.pdf
    • https://cdn-cms.f-static.net/uploads/4369152/normal_5f88fb9827e03.pdf
    • https://cdn-cms.f-static.net/uploads/4367286/normal_5f8756665d6f9.pdf
    • https://lajojixuvoporor.weebly.com/uploads/1/3/0/7/130738555/donuzeka_jefesafereman
    • https://uploads.strikinglycdn.com/files/6d427348-6015-4063-bc8f-cf01b7be9366/xutavakirujefejoli.pdf
    • https://uploads.strikinglycdn.com/files/470a6845-3672-4c69-8903-0e70528ead66/9491277115.pdf
    • https://uploads.strikinglycdn.com/files/95c747b6-15d2-4e03-a124-3d7fd851b8cf/gerikodapexo.pdf
    • https://uploads.strikinglycdn.com/files/4de8187c-78be-4629-a9de-3417bd8a18c8/37531530147.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_off00006aa0.bin
0e68435497ec31db9ce83186d61280f70abdb88d32a10d861ff21e006610fc29
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA0 5656 bytes
font_01_sfnt_off00007db1.bin
2b1f64ef710d6f42d24c27e5977579663db5d2525d6181aa9648fb150318bacd
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DB1 10060 bytes