Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ea1c0c12bcf5b50…

MALICIOUS

PDF

42.3 KB Created: 2020-08-12 10:09:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d897f4441cef19232feef54ad0a47913 SHA-1: 96a4d0e4ffe6f7a2635175a7544129654c42ecfe SHA-256: 3ea1c0c12bcf5b505ee2ea08d1ff76668fc7d5b6f47e5badf4860490a005dd4f
128 Risk Score

Malware Insights

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

The PDF file contains a prominent link disguised as a tutorial download, which redirects to a malicious URL. This indicates a social engineering attack aimed at tricking users into visiting a potentially harmful site. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility. The primary malicious URL identified is ttraff.cc.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=codeware+compress+tutorial+pdf
    • http://bexeraso.rollingstonepens.com/uploads/1/3/1/8/131871796/9721677.pdf
    • http://files.twbuddha.com/uploads/1/3/0/8/130813042/7232510.pdf
    • http://files.rubiis.com/uploads/1/3/1/8/131856995/fimudu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2599/7722/files/mtg_arena_installer.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5388/files/zipevixijakajebiranoje.pdf
    • https://cdn.shopify.com/s/files/1/0430/9755/5093/files/addiction_procrastination_and_laziness_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/9919/3501/files/25310500048.pdf
    • https://cdn.shopify.com/s/files/1/0434/2172/8933/files/list_of_vocabulary_words_with_tamil_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0434/2530/0629/files/heart_bottle_gungeon.pdf
    • https://cdn.shopify.com/s/files/1/0428/6211/7031/files/36769071181.pdf
    • https://cdn.shopify.com/s/files/1/0430/5331/8298/files/94743964704.pdf
    • https://cdn.shopify.com/s/files/1/0432/6726/0582/files/xidowudilulisogomidixim.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73807437975.pdf
    • https://cdn.shopify.com/s/files/1/0440/0391/7974/files/mefetizaseloxosafo.pdf
    • https://cdn.shopify.com/s/files/1/0430/6275/5490/files/85929418839.pdf
    • https://cdn.shopify.com/s/files/1/0434/4135/6950/files/zawawodedagafusezo.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_off00006669.bin
9a8f838fe30638767b878044926803fe6d61365ea84553763456ac594589c433
pdf-font-stream PDF embedded font (sfnt) at offset 0x6669 5296 bytes
font_01_sfnt_off00007868.bin
c9a83fa7de3e839a0d0403c7a76ef3975165fe504984fd3145064d639a23d355
pdf-font-stream PDF embedded font (sfnt) at offset 0x7868 10528 bytes