Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fcbc27542b20e80…

MALICIOUS

PDF

43.8 KB Created: 2020-08-11 18:15:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 762836713b7aca97412903e76e14f607 SHA-1: c943518180d6d56f9c6272c6f47ae8728df21935 SHA-256: 3fcbc27542b20e808de66fb17504b8f354e695502a6be1bb51b0361975f828b7
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains the same URL and a reference to 'action research in education book pdf', suggesting a lure. The PDF also contains a large number of external links, many hosted on Shopify, which is flagged as a link farm. The primary malicious IOC is the redirector URL.

Heuristics 3

  • 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.
  • 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=action+research+in+education+book+pdf
    • http://files.kalaanylab.org/uploads/1/3/1/6/131637385/zamukaraw_lepofuritulod.pdf
    • http://files.bethgatesglass.com/uploads/1/3/1/3/131381946/deralapafirefir-nevufa.pdf
    • http://files.fnpscoccoloba.org/uploads/1/3/0/7/130775645/siroket.pdf
    • http://files.apexcoachingsolutions.com/uploads/1/3/1/4/131437889/5530266.pdf
    • http://files.z-source.com/uploads/1/3/1/8/131857049/vimem-rapow-puropufaka.pdf
    • https://cdn.shopify.com/s/files/1/0432/0657/4238/files/77012445392.pdf
    • https://cdn.shopify.com/s/files/1/0427/8019/7031/files/logalikabawopixuve.pdf
    • https://cdn.shopify.com/s/files/1/0430/1307/9203/files/15240559990.pdf
    • https://cdn.shopify.com/s/files/1/0429/6402/5493/files/car_engine_parts_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/5546/4104/files/sutaduda.pdf
    • https://cdn.shopify.com/s/files/1/0435/1423/2996/files/zuwivarapafewutavev.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81667611697.pdf
    • https://cdn.shopify.com/s/files/1/0432/8341/5204/files/pokawufezomaf.pdf
    • https://cdn.shopify.com/s/files/1/0432/9517/8902/files/payday_2_hotline_miami_hud.pdf
    • https://cdn.shopify.com/s/files/1/0436/3960/3360/files/80659534267.pdf
    • https://cdn.shopify.com/s/files/1/0436/4759/8742/files/detailed_estimate_of_building.pdf
    • https://cdn.shopify.com/s/files/1/0428/1679/8886/files/48079257016.pdf
    • https://cdn.shopify.com/s/files/1/0432/1034/2559/files/rupodafijumuje.pdf
    • https://cdn.shopify.com/s/files/1/0433/2273/6798/files/zisedapunaritadufode.pdf
    • https://cdn.shopify.com/s/files/1/0432/8649/5397/files/55809558000.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_off000067ca.bin
afef52dccb5a34d3a02d91f0f07c0d42915bf005d6e12c908f26c0332fab2708
pdf-font-stream PDF embedded font (sfnt) at offset 0x67CA 5404 bytes
font_01_sfnt_off00007a12.bin
a2bfe76ca1a391ce4b5410c12b36a2fb012e138ccedcb082e3333d700cdad786
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A12 12296 bytes