Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fc9b41da605a588…

MALICIOUS

PDF

41.8 KB Created: 2020-08-10 08:47:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8049f6e0b5e58aeb57767a8a049fb37f SHA-1: d69e8949a5b1315271cfb7d3b5e0f126b40aa5e3 SHA-256: 8fc9b41da605a58874fc7b7c83d675cc144df166b093c5bbe72530afca4052d3
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to shopify domains, but one critical link to 'ttraff.ru' is identified as a malicious redirector. The document body, though heavily corrupted, contains text related to downloading a PDF and the malicious redirector URL. This suggests the primary purpose is to redirect users to malicious sites, likely for SEO spam or phishing, rather than delivering a direct exploit.

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=telecharger+journal+el+watan+pdf+gratuit
    • http://files.robertwburroughs.com/uploads/1/3/0/9/130969562/xumiwelofuwadigege.pdf
    • http://files.domesticatingthecigarette.com/uploads/1/3/1/6/131636654/guwasu_zelelep.pdf
    • http://fuvos.yinq.net/uploads/1/3/2/7/132710797/kuxegaxunenoxedafa.pdf
    • http://files.kimprintzcustoms.com/uploads/1/3/0/7/130740483/cef74.pdf
    • http://files.boobybalm.com/uploads/1/3/0/7/130740530/vavavup_kelopoj_toxajonotane_relamuzoxagoxas.pdf
    • https://cdn.shopify.com/s/files/1/0433/9957/7756/files/download_novel_alma_aridatha.pdf
    • https://cdn.shopify.com/s/files/1/0436/2086/0067/files/sosagosekozavoxepefunusef.pdf
    • https://cdn.shopify.com/s/files/1/0433/9603/8812/files/85193655903.pdf
    • https://cdn.shopify.com/s/files/1/0429/1536/5031/files/jabigasedewosinekoran.pdf
    • https://cdn.shopify.com/s/files/1/0432/4841/8973/files/duguru.pdf
    • https://cdn.shopify.com/s/files/1/0432/7433/8472/files/41933458151.pdf
    • https://cdn.shopify.com/s/files/1/0433/7270/7990/files/dinininivadajidaw.pdf
    • https://cdn.shopify.com/s/files/1/0434/6318/0438/files/subaru_owner_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/8143/3242/files/the_walking_dead_s07e14_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0432/1751/8751/files/mayor_que_yo_lyrics.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_off00006611.bin
94a1c208cbe59ff9734ed56f8d01a260775ab087dfece3474090dc4f0a425748		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6611 5356 bytes
font_01_sfnt_off00007856.bin
dccacf5f7841e5b2debe053174586cb5cf7efccf85877064dca17f026e19fe42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7856 9876 bytes

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