Malicious PDF — malware analysis report

Static analysis result for SHA-256 eafb321e43242727…

MALICIOUS

PDF

38.5 KB Created: 2020-08-22 15:12:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e452151a85bce22c2d240eaabb4a00f SHA-1: 641db7403b18e77ece017380e9f9533f90e7c077 SHA-256: eafb321e432427276d8b1c8cc023f817dedd0919e80b5bd935f3ae8bb2b41d0c
120 Risk Score

Malware Insights

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

The PDF document contains a mass of external links, many of which point to a link farm hosted on Shopify. One of the primary links directs to a known malicious redirector, ttraff.com, disguised as a free Gmail email signature template. This suggests a phishing or social engineering attack aimed at redirecting users to malicious infrastructure.

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.com/pify?keyword=gmail+email+signature+template+free
    • http://files.losangelesaazk.org/uploads/1/3/2/7/132740756/bezexuzaw.pdf
    • http://vipaxu.andryproperties.net/uploads/1/3/2/8/132814930/2500952.pdf
    • http://files.ageniart.com.au/uploads/1/3/1/3/131380845/napudorit.pdf
    • http://files.sheng.studio/uploads/1/3/1/4/131406498/fukasaxusedame.pdf
    • https://cdn.shopify.com/s/files/1/0429/9515/5105/files/manual_icloud_backup.pdf
    • https://cdn.shopify.com/s/files/1/0430/3791/7333/files/megafazovokitu.pdf
    • https://cdn.shopify.com/s/files/1/0435/3517/1736/files/xemejejavijuvixo.pdf
    • https://cdn.shopify.com/s/files/1/0432/6647/4139/files/narizuxafapejajafup.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/ancient_greek_english_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0433/3964/5093/files/fegoji.pdf
    • https://cdn.shopify.com/s/files/1/0434/4374/9029/files/gospel_of_luke_bible_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0437/7729/4498/files/wokolupipob.pdf
    • https://cdn.shopify.com/s/files/1/0434/8503/6708/files/meaning_of_agribusiness.pdf
    • https://cdn.shopify.com/s/files/1/0431/0922/0503/files/46339083598.pdf
    • https://cdn.shopify.com/s/files/1/0436/6378/6137/files/kadufobifukimuwe.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_off00005a14.bin
205839f898e87e9ca0c779a2b8c227451bce7203150940888cb74ce11b2d4a99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A14 5252 bytes
font_01_sfnt_off00006bde.bin
01fd554cf6ed0d6778d08ed83bdb57fb08965d2028715c404512bacb35f71585		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BDE 9756 bytes

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