Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cb1d5ab86436113…

MALICIOUS

PDF

56.8 KB Created: 2020-08-10 04:42:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e85819111d11f3820ea9b848915e634 SHA-1: 25f739e6327c50bb308ff7c911f37a83d3ead34f SHA-256: 9cb1d5ab86436113ce295e6fd54f9c6b6210d7eb0bca1d56c2b60da30fbc281a
120 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a redirector service, which is a common technique for delivering malicious payloads or phishing pages. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms that the link leads to known malicious infrastructure. The PDF also contains a link farm, suggesting an attempt to manipulate search engine results or distribute content widely. The document body, though heavily obfuscated, contains the target URL, reinforcing the malicious intent.

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=burglar+s+guide+to+the+city+pdf
    • http://files.ronrash.com/uploads/1/3/1/1/131163788/2392257.pdf
    • http://xojuse.otamamarere.com/uploads/1/3/0/7/130776208/9e3671668f.pdf
    • http://zunad.gruuvtech.com/uploads/1/3/0/8/130814328/6817180.pdf
    • http://files.newworldparadigms.space/uploads/1/3/1/8/131856907/zojebulokezabi.pdf
    • https://cdn.shopify.com/s/files/1/0427/4749/4567/files/67852774097.pdf
    • https://cdn.shopify.com/s/files/1/0434/3077/2901/files/64095458377.pdf
    • https://cdn.shopify.com/s/files/1/0433/2693/1099/files/xunasasufinunupik.pdf
    • https://cdn.shopify.com/s/files/1/0431/6200/9755/files/babist_faith_crossword.pdf
    • https://cdn.shopify.com/s/files/1/0433/0799/1208/files/72088522403.pdf
    • https://cdn.shopify.com/s/files/1/0440/2338/2166/files/aprendizaje_significativo_autores.pdf
    • https://cdn.shopify.com/s/files/1/0436/8993/5003/files/zivaseniwe.pdf
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/92222698339.pdf
    • https://cdn.shopify.com/s/files/1/0430/6753/9623/files/21574046606.pdf
    • https://cdn.shopify.com/s/files/1/0430/4266/8698/files/beta_oxidation_of_unsaturated_fatty_acid.pdf
    • https://cdn.shopify.com/s/files/1/0431/7049/6672/files/11081046818.pdf
    • https://cdn.shopify.com/s/files/1/0438/0921/0528/files/ffmpeg_mov_to_mp4.pdf
    • https://cdn.shopify.com/s/files/1/0429/9236/9823/files/zugokefodemibibod.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_off0000911d.bin
6a9babea865f3a6bfc32efa05e96012e6fb4686316dbdcc43fa9cb03a786b627
pdf-font-stream PDF embedded font (sfnt) at offset 0x911D 5344 bytes
font_01_sfnt_off0000a369.bin
49c1528cfd21090107921c4ac8ff59aedb97a42c0ff57134368668cdaca286d8
pdf-font-stream PDF embedded font (sfnt) at offset 0xA369 10584 bytes
font_02_sfnt_off0000c795.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xC795 4324 bytes