Malicious PDF — malware analysis report

Static analysis result for SHA-256 a449978c986d5ab3…

MALICIOUS

PDF

60.9 KB Created: 2020-08-03 19:21:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ca6d145c19b3932b4a9be50ab7d2335a SHA-1: 3a8b1f225b49f8ebf73dd7cc86da3d77c01672b6 SHA-256: a449978c986d5ab3f9529cc737f7778853e9cdd02d0bca12c8025f67cc46bd15
128 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector, indicating an attempt to lead the user to a harmful website. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags the URL https://ttraff.ru/pify?keyword=ncert+solutions+class+12+chemistry+coordination+compounds+pdf as malicious. The presence of a 'download button' lure further supports the social engineering aspect of this attack.

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.ru/pify?keyword=ncert+solutions+class+12+chemistry+coordination+compounds+pdf
    • http://files.heracleous.org/uploads/1/3/0/7/130740211/4243835.pdf
    • http://files.realtalkwsimone.com/uploads/1/3/0/9/130969166/6377380.pdf
    • http://files.sushi-logos.com/uploads/1/3/1/6/131637656/denifiwofe.pdf
    • https://cdn.shopify.com/s/files/1/0437/6772/6232/files/wonexapitodej.pdf
    • https://cdn.shopify.com/s/files/1/0432/9324/5590/files/astral_projection_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/tegoxufidok.pdf
    • https://cdn.shopify.com/s/files/1/0431/7744/3483/files/tizodumepapotisula.pdf
    • https://cdn.shopify.com/s/files/1/0434/1573/2381/files/xawidapun.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/15745907147.pdf
    • https://cdn.shopify.com/s/files/1/0433/4298/7422/files/84353922872.pdf
    • https://cdn.shopify.com/s/files/1/0434/5597/1492/files/venanukizifi.pdf
    • https://cdn.shopify.com/s/files/1/0431/9641/6157/files/89386258640.pdf
    • https://cdn.shopify.com/s/files/1/0428/9167/3763/files/87888556751.pdf
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/34078282625.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_off00008e34.bin
9a1657cdf4ac18f7c0f63ba92b305ab7e0610278e452f789abc38aa7f203eaa8
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E34 5648 bytes
font_01_sfnt_off0000a158.bin
e86631dd43a94a6734a0527eee718c1c0bd0de8f4fbd27940c62b9aa3c5c6dd5
pdf-font-stream PDF embedded font (sfnt) at offset 0xA158 14792 bytes
font_02_sfnt_off0000d057.bin
f7c959ef3840947929b2fbf21a6f844c3d2ba9157ff04f9c13ff486e75cc34e4
pdf-font-stream PDF embedded font (sfnt) at offset 0xD057 16192 bytes