Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9c09c3171dd2d2c…

MALICIOUS

PDF

33.3 KB Created: 2020-08-24 15:05:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f573e327c2163424b099bc88bcde394 SHA-1: 88541413e8c0c498a69286cb6bc6be044e617821 SHA-256: d9c09c3171dd2d2cbbe4b49ccb67a072b903ff233b627d725e0639e226f6a8e7
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, 'https://ttraff.cc/pify?keyword=bengali+movie+sad+song+ringtone', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting it is the primary lure. The presence of numerous PDF links indicates a potential SEO poisoning or link farm strategy to distribute malicious content.

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=bengali+movie+sad+song+ringtone
    • http://gokidewup.besureisofficial.com/uploads/1/3/0/7/130739140/d37af5a89aa1.pdf
    • http://pejazadug.womenintrousers.org/uploads/1/3/1/4/131453133/6351557.pdf
    • http://pinoxuvij.theexplorelle.com/uploads/1/3/1/3/131380598/vowezujuvelitul_gopuwanonasiw_famowuzokezog_radoragug.pdf
    • http://files.nk-opatija.com/uploads/1/3/0/8/130874120/1867679.pdf
    • https://cdn.shopify.com/s/files/1/0437/1959/0040/files/simple_classroom_rules_for_high_school_students.pdf
    • https://cdn.shopify.com/s/files/1/0428/1804/4063/files/veximakabobamosovab.pdf
    • https://cdn.shopify.com/s/files/1/0433/3718/7493/files/80360895692.pdf
    • https://cdn.shopify.com/s/files/1/0431/3861/3399/files/goxewowusigezazo.pdf
    • https://cdn.shopify.com/s/files/1/0430/6383/6834/files/genigezilenijevelarezi.pdf
    • https://cdn.shopify.com/s/files/1/0432/6785/0390/files/garami.pdf
    • https://cdn.shopify.com/s/files/1/0430/9070/6599/files/biblia_hebraica_stuttgartensia_en_espaol_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/p_h-_protocol_valassis.pdf
    • https://cdn.shopify.com/s/files/1/0440/6778/2808/files/akreditasi_ugm.pdf
    • https://cdn.shopify.com/s/files/1/0429/8699/5863/files/diy_murphy_bunk_bed_plans.pdf
    • https://cdn.shopify.com/s/files/1/0432/9757/0980/files/folisegukogekamerofub.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_off00004544.bin
976f8cc7268d31c6562c4b10274257fdf9a636db663f68a3491f1f9456d899ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4544 5256 bytes
font_01_sfnt_off0000570d.bin
82e7c282bb68b5dee90cba0b783292d03eebad570233db25cf311a0de267d595		 pdf-font-stream PDF embedded font (sfnt) at offset 0x570D 9852 bytes

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