Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cabbe976b9aa365…

MALICIOUS

PDF

40.7 KB Created: 2020-08-22 03:40:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42190c6d87661debf225ea279133e855 SHA-1: ec4ccc745b4b074dbe58482a4093d611fe4d643a SHA-256: 9cabbe976b9aa365053bd4f5ce984b778bbcd2c3fe6a448791a92ec043e891ea
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a malicious redirector link that points to ttraff.ru, which is flagged as malicious. It also exhibits characteristics of a PDF link farm, with numerous links to external PDFs, some of which are hosted on Shopify. The document body contains a lure related to bypassing limits, and the embedded link likely leads to a second-stage download or exploit. The presence of a visual download button further supports a malicious workflow.

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=jer+bypass+mega+limit
    • http://todem.joewillis.net/uploads/1/3/1/6/131606183/d3dd28.pdf
    • http://sibopij.scubaprints.com/uploads/1/3/1/4/131407558/kukawaduji.pdf
    • https://cdn.shopify.com/s/files/1/0433/6346/7414/files/18661366265.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/39858795743.pdf
    • https://cdn.shopify.com/s/files/1/0437/1690/3080/files/synonyms_antonyms_list_competitive_exams.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32878299647.pdf
    • https://cdn.shopify.com/s/files/1/0434/4761/5649/files/77329626709.pdf
    • https://cdn.shopify.com/s/files/1/0432/3583/6063/files/dizionario_ceco_italiano.pdf
    • https://cdn.shopify.com/s/files/1/0431/2553/8973/files/hp_laserjet_p1102w_wireless_setup_without_cd.pdf
    • https://cdn.shopify.com/s/files/1/0437/2175/2731/files/rubomewamidum.pdf
    • https://cdn.shopify.com/s/files/1/0437/7749/1105/files/zotijesuji.pdf
    • https://cdn.shopify.com/s/files/1/0427/9926/8003/files/67196052238.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_off0000613b.bin
4b79ed3f56b75b1381717829815c4b607fc598f54548527efafb49f9ead494fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x613B 5368 bytes
font_01_sfnt_off0000736c.bin
e5c98c4c5c52c49fbe12fc7ec1133399a6aa2bd86a62ffdc89388b4e5407581e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x736C 10212 bytes

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