Malicious PDF — malware analysis report

Static analysis result for SHA-256 24d23a9fd7897066…

MALICIOUS

PDF

43.5 KB Created: 2020-08-30 07:56:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 31e625677fdba9092d33f418a256214d SHA-1: 3a1ae22533c8200a3e6bdc2ee6ff4358f31d03f7 SHA-256: 24d23a9fd7897066754b83fc14081ce3bbfdc16e78d3f39eadc5048f2c5f7911
128 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised with a search query for 'sherlock holmes 2 indir'. Additionally, it hosts a large number of links to other PDFs on Shopify, suggesting a link farm designed to obscure the true malicious destination. The presence of a visual download button further supports a social engineering lure.

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/wix?keyword=sherlock+holmes+2+indir
    • https://cdn.shopify.com/s/files/1/0428/2440/1063/files/sonutopufamapaneguvewod.pdf
    • https://cdn.shopify.com/s/files/1/0429/1585/6550/files/lezizezosomazova.pdf
    • https://cdn.shopify.com/s/files/1/0443/1986/7036/files/70247286452.pdf
    • https://cdn.shopify.com/s/files/1/0434/1478/2104/files/15045290194.pdf
    • https://cdn.shopify.com/s/files/1/0428/2390/9532/files/jixomeg.pdf
    • https://cdn.shopify.com/s/files/1/0437/8584/6933/files/coats_manual_tire_changer.pdf
    • https://cdn.shopify.com/s/files/1/0428/6211/7030/files/doraemon_new_episodes_in_telugu_2017.pdf
    • https://cdn.shopify.com/s/files/1/0462/6540/1495/files/muxoragonusoge.pdf
    • https://cdn.shopify.com/s/files/1/0432/8642/9861/files/generative_deep_learning_book.pdf
    • https://cdn.shopify.com/s/files/1/0463/5050/0002/files/tatojukulakove.pdf
    • https://cdn.shopify.com/s/files/1/0430/6498/3701/files/blockchain_developer_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0432/6667/0745/files/dodufeserugap.pdf
    • https://cdn.shopify.com/s/files/1/0429/0173/3542/files/macbook_excel_spreadsheet.pdf
    • https://cdn.shopify.com/s/files/1/0435/6908/6623/files/gekegojesowadulolipife.pdf
    • https://static.usrfiles.com/ugd/63022f_431cfc937b834eef9f6c4fb4d5f4145c.pdf
    • https://static.usrfiles.com/ugd/50c35f_df6dee16606043eb92471196b3a53279.pdf
    • https://static.usrfiles.com/ugd/b8c837_5bde45607d7d45798d5c14c2ef08990e.pdf
    • https://static.usrfiles.com/ugd/dc98cc_632de8e77cf74930a5eaaefd2d0f97cf.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_off0000607a.bin
e3c2129a4609d658a579facdd0036ffa43f1ac12f931cd9384fea545da6930db
pdf-font-stream PDF embedded font (sfnt) at offset 0x607A 5268 bytes
font_01_sfnt_off0000723a.bin
54c55249b68da0bf76cbd634565e3f5b1cbeaa455b142f80ec3aefd456e29c0f
pdf-font-stream PDF embedded font (sfnt) at offset 0x723A 15012 bytes