Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5ca7eb796275556…

MALICIOUS

PDF

46.9 KB Created: 2020-08-12 09:01:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 13de11d3427ab37805387e6b818b1432 SHA-1: 26cf4ba746dcf07535cfa8469b1239506c68e32c SHA-256: e5ca7eb7962755561f834b01022c74095ea6b9c32d122d9c6bf31828c03e6cbc
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL and a reference to 'catalogue oriflame 11 2020 pdf', suggesting a lure. The presence of a 'download button' heuristic further supports the attack pattern of social engineering users to click malicious links.

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=catalogue+oriflame+11+2020+pdf
    • http://files.debadavis.com/uploads/1/3/0/7/130739169/622378.pdf
    • http://files.sentinelhealthshield.com/uploads/1/3/1/4/131453354/d7748ca979fd64a.pdf
    • http://files.mnjeweler.com/uploads/1/3/1/4/131437740/fomurogoxufirofaliz.pdf
    • http://files.speakeasyleather.com/uploads/1/3/1/0/131070611/1018784.pdf
    • http://fefar.ourchildrenshomestead.org/uploads/1/3/2/7/132710714/segixi.pdf
    • https://cdn.shopify.com/s/files/1/0435/3287/7976/files/rotugixag.pdf
    • https://cdn.shopify.com/s/files/1/0430/0223/2983/files/brassage_gntique.pdf
    • https://cdn.shopify.com/s/files/1/0432/3675/3570/files/laboratory_biosafety_and_biosecurity.pdf
    • https://cdn.shopify.com/s/files/1/0437/8502/7745/files/the_doctor_s_guide_to_critical_appraisal_fourth_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/4903/3627/files/dadelujijikunizemafo.pdf
    • https://cdn.shopify.com/s/files/1/0429/0989/2767/files/54261686685.pdf
    • https://cdn.shopify.com/s/files/1/0431/6564/7012/files/poraziwopilusatilate.pdf
    • https://cdn.shopify.com/s/files/1/0437/5491/3950/files/6319610243.pdf
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/fate_of_pyruvate_under_aerobic_and_anaerobic_conditions.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/88979478244.pdf
    • https://cdn.shopify.com/s/files/1/0428/7922/1927/files/dezuxazaxujuzuzanup.pdf
    • https://cdn.shopify.com/s/files/1/0439/1777/0904/files/34_country_code.pdf
    • https://cdn.shopify.com/s/files/1/0447/3402/1788/files/88638619018.pdf
    • https://cdn.shopify.com/s/files/1/0434/5534/8888/files/mokoxulof.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_off00006ad8.bin
aee2e080996547d7848e2cb8d4f364c607363fda0ab220bbab264f1477778c90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AD8 5308 bytes
font_01_sfnt_off00007cf9.bin
87cb2226b16031d2d774dbfc873aa040286b9dc5a272e5ad9bae8ab059b606f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF9 10288 bytes
font_02_sfnt_off0000a027.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA027 4324 bytes

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