Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b3af437d2e28dcf…

MALICIOUS

PDF

45.7 KB Created: 2020-08-02 08:42:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a06eb684d5c34036835bb2bcf9f039a SHA-1: 15680b212542cfc7649d5fb2f4a6d53be140f374 SHA-256: 8b3af437d2e28dcf2e167d1c6a3c3a7366214ec048d705455f6399ba05f4f6e1
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external links, indicating a link farm. The primary malicious URL identified is 'https://ttraff.cc/pify?keyword=osrs+between+a+rock'. The document body contains garbled text but includes the same URLs, reinforcing the finding of a link farm designed to lead users to potentially harmful content.

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.cc/pify?keyword=osrs+between+a+rock
    • http://files.troop115.com/uploads/1/3/1/3/131384777/8468078.pdf
    • http://files.jewelsofafrica.org/uploads/1/3/0/7/130775786/talabojinatilo_timexilogurago_sezoweduwuzo_jegiwusemuvu.pdf
    • http://files.oliviaiannotti.com/uploads/1/3/1/3/131380210/5169071.pdf
    • https://cdn.shopify.com/s/files/1/0431/4886/9786/files/tejunawaxowawofojobexaso.pdf
    • https://cdn.shopify.com/s/files/1/0435/8687/9647/files/sinilezebatinofebavi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1161/2572/files/kaledazika.pdf
    • https://cdn.shopify.com/s/files/1/0430/8520/1561/files/26747642125.pdf
    • https://cdn.shopify.com/s/files/1/0432/8315/3056/files/45184944402.pdf
    • https://cdn.shopify.com/s/files/1/0437/6805/3909/files/kikoditagojexovata.pdf
    • https://cdn.shopify.com/s/files/1/0437/6032/0663/files/onn_remote_codes_onb13av004_code_list.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87967576867.pdf
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/44539171624.pdf
    • https://cdn.shopify.com/s/files/1/0430/9660/4825/files/28983128779.pdf
    • https://cdn.shopify.com/s/files/1/0429/5193/4108/files/31832858220.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_off00007673.bin
a76d89d25d19edb3f22ac1b811ed9b406cb43c3e5c516bf9ddfe8b3f731d768a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7673 5084 bytes
font_01_sfnt_off000087df.bin
ecce8656c340be212a22249ac298ea4a53adffb3874a12518e94da585fea1ad4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87DF 10164 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.