Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8cec5a3c26eecb8…

MALICIOUS

PDF

51.8 KB Created: 2020-08-22 11:44:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9212dc7679e6a498bf91e1cc66bcaeec SHA-1: d825d67bc5c525228af2bfcc7129d06998fcaf7d SHA-256: b8cec5a3c26eecb82df73bb80ead950f5f85dbb706d51a31212389b005ecfe87
128 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, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, also contains this URL and a link to a Shopify domain, which is part of a link farm. The presence of a download button lure further supports the malicious intent of redirecting the user to potentially harmful content.

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=canon+eos+rebel+t3+camera+instruction+manual
    • http://files.crownlifeseminars.com/uploads/1/3/2/7/132710669/fizezad-ronux.pdf
    • http://files.vk3sn.net/uploads/1/3/1/8/131871894/d40f274a4b81b4.pdf
    • http://files.eventsbyceecee.com/uploads/1/3/1/4/131454049/rikazawutudazikikuto.pdf
    • http://files.storiesof-fineart.com/uploads/1/3/2/6/132682528/1c95a16.pdf
    • https://cdn.shopify.com/s/files/1/0450/0160/5278/files/partnership_deed_format.pdf
    • https://cdn.shopify.com/s/files/1/0430/7543/6698/files/zibuje.pdf
    • https://cdn.shopify.com/s/files/1/0440/8279/0552/files/87337380322.pdf
    • https://cdn.shopify.com/s/files/1/0429/7487/1711/files/sindrome_de_abstinencia_a_la_cafeina.pdf
    • https://cdn.shopify.com/s/files/1/0432/3311/6317/files/zusosokosenuvobi.pdf
    • https://cdn.shopify.com/s/files/1/0454/7198/9918/files/cardiogenic_pulmonary_edema.pdf
    • https://cdn.shopify.com/s/files/1/0429/5216/3481/files/vujegavokuwufovaga.pdf
    • https://cdn.shopify.com/s/files/1/0432/5241/6672/files/letiboniforuputekiwutoni.pdf
    • https://cdn.shopify.com/s/files/1/0430/5318/7223/files/sampling_techniques_cochran.pdf
    • https://cdn.shopify.com/s/files/1/0434/1353/6935/files/9203045190.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/70250276291.pdf
    • https://cdn.shopify.com/s/files/1/0430/7556/7770/files/54657567654.pdf
    • https://cdn.shopify.com/s/files/1/0439/8442/1022/files/xugebeforewukaxoz.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_off000086bd.bin
dfec9910d3799bbb028eeb8df7d77475d5397f62aa48771fe1ef8e88e32c7e9c
pdf-font-stream PDF embedded font (sfnt) at offset 0x86BD 5152 bytes
font_01_sfnt_off0000982d.bin
ad535a5eebb7a8c97151d2a9354db826664c53ca6783dd933bc2353d03b440fc
pdf-font-stream PDF embedded font (sfnt) at offset 0x982D 13416 bytes