Malicious PDF — malware analysis report

Static analysis result for SHA-256 8abd9c1fa4cac7a8…

MALICIOUS

PDF

60.0 KB Created: 2020-08-21 11:07:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58dd1d7bdcd716877ff2833daa110296 SHA-1: c36d62f0f1a80a9a4b6e74ed54c458ac880ba507 SHA-256: 8abd9c1fa4cac7a8eedc152f19120a400fe2e8a3a6f36d11e562d54c0607afbf
128 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a 'Canon 5d mark ii manual pdf'. This link redirects to 'https://ttraff.cc/pify?keyword=canon+5d+mark+ii+manual+pdf', which is flagged as malicious. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm designed for SEO manipulation to attract users searching for specific documents.

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+5d+mark+ii+manual+pdf
    • http://bifubusok.tpccommunicationsaustin.com/uploads/1/3/0/7/130739892/ropag_peledem_bijaxaroxadowa.pdf
    • http://files.firstchristianwinchester.org/uploads/1/3/1/8/131856945/gotamovejujotetibu.pdf
    • http://files.trstainless.com/uploads/1/3/1/4/131453268/1573496.pdf
    • http://files.josephturyatemba.com/uploads/1/3/0/7/130738850/6502053.pdf
    • https://cdn.shopify.com/s/files/1/0430/6167/4133/files/5396867265.pdf
    • https://cdn.shopify.com/s/files/1/0431/5604/5981/files/vetilaronobugiwuwad.pdf
    • https://cdn.shopify.com/s/files/1/0433/9505/5777/files/bepokejiwazadenezujos.pdf
    • https://cdn.shopify.com/s/files/1/0436/5064/6169/files/waikiki_surf_cam.pdf
    • https://cdn.shopify.com/s/files/1/0433/5704/4890/files/62264063416.pdf
    • https://cdn.shopify.com/s/files/1/0432/0765/5579/files/jotidavuwejokupudu.pdf
    • https://cdn.shopify.com/s/files/1/0433/2843/8427/files/97194383402.pdf
    • https://cdn.shopify.com/s/files/1/0429/6785/9359/files/77217390781.pdf
    • https://cdn.shopify.com/s/files/1/0435/5624/1557/files/hotel_asset_management_principles_practices.pdf
    • https://cdn.shopify.com/s/files/1/0446/5842/6019/files/atmel_microcontroller_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/6309/1112/files/mokakovimirituvonagire.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/
    • https://cdn.shopify.com/s/files/1/0431/6309/1112/files/mokakovimirit

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a6ef.bin
176dcc45089cdc550f9a6823989e1a95b579c27973568adbdffd2558d57a8847
pdf-font-stream PDF embedded font (sfnt) at offset 0xA6EF 5104 bytes
font_01_sfnt_off0000b83a.bin
be279c564d9850bd832cb73921c6adeb93501d12afa2444224f18066d05257c7
pdf-font-stream PDF embedded font (sfnt) at offset 0xB83A 13340 bytes