Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1b3f7b3e00b0640…

MALICIOUS

PDF

43.0 KB Created: 2020-08-27 18:24:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54e316ac6b212ed35d3333a99eae41e7 SHA-1: 686e474d93bf071f9bef2b4142bab092ba9dc4b4 SHA-256: b1b3f7b3e00b06404ff2e946379fb15f90c3317a2b9e435554b791a146d7bcfb
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, suggesting an attempt to manipulate search engine results or distribute content through a link farm. The primary malicious IOC is the redirector URL, which likely leads to further malicious activity.

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=panamax+m5400+pm
    • http://damiw.westconcho.com/uploads/1/3/0/7/130776326/zetariteseravokizanu.pdf
    • http://zasew.executivesuitesofcapecoral.com/uploads/1/3/1/4/131453540/xujuwiji-vutigovopat-toruwaked-samegi.pdf
    • http://files.phoenixyouthfc.com/uploads/1/3/0/7/130776037/6047911.pdf
    • https://cdn.shopify.com/s/files/1/0437/1962/2808/files/23402310184.pdf
    • https://cdn.shopify.com/s/files/1/0427/7560/9510/files/corbettmaths_5_a_day_answers_december.pdf
    • https://cdn.shopify.com/s/files/1/0430/7078/3645/files/como_descargar_aplicaciones_android_de_pago_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0433/1008/8357/files/laxidovarenepibemowaweluk.pdf
    • https://cdn.shopify.com/s/files/1/0433/6677/6991/files/hp_officejet_pro_8600_parts_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/4262/5953/files/golden_ratio_template_adobe_illustrator.pdf
    • https://cdn.shopify.com/s/files/1/0437/2273/5767/files/19789764129.pdf
    • https://cdn.shopify.com/s/files/1/0429/6838/3642/files/how_do_you_type_a_shrug.pdf
    • https://cdn.shopify.com/s/files/1/0431/1983/7346/files/2726310122.pdf
    • https://cdn.shopify.com/s/files/1/0431/0496/0676/files/93252684958.pdf
    • https://cdn.shopify.com/s/files/1/0436/5264/5017/files/vision_ias_current_affairs_may_2020_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0460/3310/9156/files/97500407410.pdf
    • https://cdn.shopify.com/s/files/1/0435/1059/5748/files/sizedire.pdf
    • https://cdn.shopify.com/s/files/1/0447/5971/1898/files/ethiopian_grade_9_biology_textbook_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/2571/0750/files/kerupemuruniwolakojuviril.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/
    • https://cdn.shopify.com/s/files/1/0432/2571/0750/files/kerupemuruniwola

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006aa8.bin
abcd434d1dad2251f0d6654dbdd6f1ac85a01900d6a9197d11cf678e506194d3
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA8 5080 bytes
font_01_sfnt_off00007be8.bin
b2dc1165b0e499f0c912bdccd863674c27c30a09e07beba8d3d53d3acdf912e7
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE8 10316 bytes