Malicious PDF — malware analysis report

Static analysis result for SHA-256 40064b4846f5c2f1…

MALICIOUS

PDF

46.1 KB Created: 2020-08-15 03:53:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a52dee40d4d907288e56428f1b247c9 SHA-1: 204697892d97a355adc8e5911df62746cdc50fcc SHA-256: 40064b4846f5c2f11fb6dca981e38e8ac8de08b5687bccc58b897f551855fdf8
128 Risk Score

Malware Insights

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

The PDF file contains a lure related to 'mobile app templates' and includes a high number of embedded links, many of which point to external PDF files. One critical heuristic identified a link to known malicious redirector infrastructure, specifically 'https://ttraff.cc/pify?keyword=mobile+app+templates+psd+free'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect users to malicious content. The presence of a large link farm further supports a social engineering attack pattern.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=mobile+app+templates+psd+free
    • http://files.wbxztv.com/uploads/1/3/0/9/130969405/mawuwi-zulad-bogunan-lezumakowav.pdf
    • http://files.spanishgrantbayside.com/uploads/1/3/1/6/131606668/xegowifo.pdf
    • http://files.californiatradewinds.com/uploads/1/3/0/7/130776519/xurupususik-dovatikaku-powikajusa-rararomig.pdf
    • https://cdn.shopify.com/s/files/1/0429/6274/7545/files/18030201327.pdf
    • https://cdn.shopify.com/s/files/1/0434/6747/3046/files/personajes_de_dragon_ball.pdf
    • https://cdn.shopify.com/s/files/1/0435/4224/9631/files/vuwomupetinurazokiloroji.pdf
    • https://cdn.shopify.com/s/files/1/0428/3033/2070/files/34251300839.pdf
    • https://cdn.shopify.com/s/files/1/0431/0256/8599/files/mokunaveg.pdf
    • https://cdn.shopify.com/s/files/1/0435/0741/7253/files/6207201751.pdf
    • https://cdn.shopify.com/s/files/1/0427/6623/7852/files/53106564267.pdf
    • https://cdn.shopify.com/s/files/1/0434/1507/7022/files/income_and_substitution_effect.pdf
    • https://cdn.shopify.com/s/files/1/0448/4956/1757/files/10615961976.pdf
    • https://cdn.shopify.com/s/files/1/0434/4283/1522/files/28502965259.pdf
    • https://cdn.shopify.com/s/files/1/0428/3216/7068/files/8202520933.pdf
    • https://cdn.shopify.com/s/files/1/0447/8402/5751/files/baritone_guitar_chord_bible.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_off0000752f.bin
0e2a0620f6e9c7b39ec0d1d76593490d862f39918d626b2e61c842dbaa6fcb01
pdf-font-stream PDF embedded font (sfnt) at offset 0x752F 5332 bytes
font_01_sfnt_off00008731.bin
866db74af1c1965b9daffe0640b49c4fe5c56004e51f8416f4174c2a407a04de
pdf-font-stream PDF embedded font (sfnt) at offset 0x8731 10688 bytes