Malicious PDF — malware analysis report

Static analysis result for SHA-256 b468317a314cf7dd…

MALICIOUS

PDF

77.1 KB Created: 2020-08-11 07:32:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 422d1294e6611e7f29bb375cca2ee8ee SHA-1: 70fb586bfb29d70e48912ccb4aa1048a7a39136e SHA-256: b468317a314cf7dd6696fcbc10cfbc6d1b4a333239b450510b516e2ffe90e2c5
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that is disguised as a download button. The link leads to 'https://ttraff.cc/pify?keyword=bangla+adarshalipi+book+pdf+download', which is a known malicious redirector. The document also contains a large number of external PDF links, many hosted on Shopify, likely for SEO manipulation to increase visibility.

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=bangla+adarshalipi+book+pdf+download
    • http://files.leadpyramidpublishing.com/uploads/1/3/1/4/131406558/34b0a9f.pdf
    • http://files.womenwhorocknashville.org/uploads/1/3/1/0/131070581/86cd1.pdf
    • http://files.magkiefoundation.org/uploads/1/3/0/8/130813461/2aa5982b44.pdf
    • http://files.yogaunme.com/uploads/1/3/0/9/130969356/1258675.pdf
    • http://walogowe.kcpvolleyball.com/uploads/1/3/1/4/131407233/4723305.pdf
    • https://cdn.shopify.com/s/files/1/0440/7469/6856/files/73137888909.pdf
    • https://cdn.shopify.com/s/files/1/0438/5295/5810/files/68106384103.pdf
    • https://cdn.shopify.com/s/files/1/0435/8524/1245/files/bolsa_de_valores_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8863/files/kubudikekaxofajami.pdf
    • https://cdn.shopify.com/s/files/1/0434/0393/5900/files/art_a_brief_history_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/4629/6985/files/mudexowizevivev.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/2283550224.pdf
    • https://cdn.shopify.com/s/files/1/0429/2391/7478/files/8329468696.pdf
    • https://cdn.shopify.com/s/files/1/0437/2758/5445/files/19793997771.pdf
    • https://cdn.shopify.com/s/files/1/0431/4267/6636/files/vibuj.pdf
    • https://cdn.shopify.com/s/files/1/0439/8622/3262/files/10622673443.pdf
    • https://cdn.shopify.com/s/files/1/0431/0335/5034/files/9805421150.pdf
    • https://cdn.shopify.com/s/files/1/0431/6200/9760/files/antenatal_exercise_in_malayalam.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0a5.bin
fb853010369e5bcc5fc34879a57cb42cb322d6b0ff4719afccfe8708e1292e7e
pdf-font-stream PDF embedded font (sfnt) at offset 0xD0A5 5648 bytes
font_01_sfnt_off0000e3d8.bin
c474d4838a19777233f2afe54f904e5a01170dfd2458f9f7e8a60263a82e9ce7
pdf-font-stream PDF embedded font (sfnt) at offset 0xE3D8 14360 bytes
font_02_sfnt_off0001113e.bin
e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6
pdf-font-stream PDF embedded font (sfnt) at offset 0x1113E 16164 bytes