Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfdf1abaedf03ac0…

MALICIOUS

PDF

41.8 KB Created: 2020-08-03 11:57:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: efaa519dfcbfd772f7ced31edfd09d56 SHA-1: 6242b211163d0dd619ac341815dad4eff2fb37b3 SHA-256: dfdf1abaedf03ac0a0fa350188802cdc0e3364b58602d1326aa027b308ff3ade
130 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains hosting PDF files, likely for SEO manipulation. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is disguised as a download for 'The new oxford annotated bible with apocrypha pdf download'. This redirector likely leads to a malicious payload. The presence of a 'download button' lure further supports a phishing or social engineering attack vector.

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=the+new+oxford+annotated+bible+with+apocrypha+pdf+download
    • http://files.shhschoir.org/uploads/1/3/1/6/131636697/d058c63d6ad.pdf
    • http://lobar.jenniferwilsonwellness.com/uploads/1/3/1/4/131438405/9ec9fe.pdf
    • http://files.arborspringsbc.org/uploads/1/3/1/4/131407530/vojopo.pdf
    • https://cdn.shopify.com/s/files/1/0431/9608/8481/files/murach_php_and_mysql_2nd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0438/1730/4226/files/94199144308.pdf
    • https://cdn.shopify.com/s/files/1/0428/5012/3943/files/94399347593.pdf
    • https://cdn.shopify.com/s/files/1/0427/6345/2583/files/17491271357.pdf
    • https://cdn.shopify.com/s/files/1/0436/6853/7497/files/govafizubaxoxomufakofud.pdf
    • https://cdn.shopify.com/s/files/1/0429/7077/5706/files/zekibedu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2478/5319/files/33111136163.pdf
    • https://cdn.shopify.com/s/files/1/0428/2833/3219/files/form_n_648.pdf
    • https://cdn.shopify.com/s/files/1/0437/3417/1797/files/sufasugujowog.pdf
    • https://cdn.shopify.com/s/files/1/0429/9961/1553/files/niganowizus.pdf
    • https://cdn.shopify.com/s/files/1/0434/0570/5374/files/77620728558.pdf
    • https://cdn.shopify.com/s/files/1/0428/8859/3567/files/bezegimuwud.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/21574837125.pdf
    • https://cdn.shopify.com/s/files/1/0435/9805/3535/files/rupoveru.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_off00006583.bin
0a21e96abb2ebaf86958c8f91d2d33bf2187397b3e205f67d5307de03ce6e1d3
pdf-font-stream PDF embedded font (sfnt) at offset 0x6583 5416 bytes
font_01_sfnt_off00007800.bin
7b9bedf7856a6f5cb2757075f3c76062289153be41095b70f5383852df35619c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7800 9828 bytes