Malicious PDF — malware analysis report

Static analysis result for SHA-256 f130a111ffd520a5…

MALICIOUS

PDF

43.7 KB Created: 2020-08-23 22:57:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 926bc201c6b9f7552c0c1114bf4affd0 SHA-1: 38045047487856f61cc0cfc1a2b03259d1ab0119 SHA-256: f130a111ffd520a5b10bce74955defbed369362d3a15c93b1ffcf9db37ad1eac
140 Risk Score

Malware Insights

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

The PDF file contains a lure related to a 'Microsoft word liability waiver template' and embeds multiple links. One critical heuristic indicates a malicious redirector link to 'ttraff.ru', which is likely used to host further malicious content or phishing pages. Another heuristic flags a large number of external PDF links, suggesting a link farm for SEO poisoning or traffic redirection. The document body, though heavily obfuscated, contains the same lure text and the malicious URL.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=microsoft+word+liability+waiver+template
    • http://files.junesablandesigns.com/uploads/1/3/2/6/132680890/gasunonez.pdf
    • http://mewejon.aboutimewatches.com/uploads/1/3/1/3/131380845/cf986cdfad.pdf
    • http://jisum.lillianlanko.com/uploads/1/3/0/7/130775195/zaposuvulosoga-sakoxobopubevux-gonuxefe-dofarinezuwu.pdf
    • http://files.divorcebetterknoxville.com/uploads/1/3/1/4/131437987/7196015.pdf
    • http://jisum.lillianlanko.com/uploads/1/3/0/7/130775195/zaposuvulosoga-sakoxobopubevux-gonuxefe-d
    • https://cdn.shopify.com/s/files/1/0429/4646/1852/files/mifubad.pdf
    • https://cdn.shopify.com/s/files/1/0434/0570/5374/files/nunewerokajixovima.pdf
    • https://cdn.shopify.com/s/files/1/0447/1246/0444/files/cleveland_police_report_theft.pdf
    • https://cdn.shopify.com/s/files/1/0435/8782/9928/files/37921947271.pdf
    • https://cdn.shopify.com/s/files/1/0433/9574/3907/files/wuragixisag.pdf
    • https://cdn.shopify.com/s/files/1/0434/5295/6838/files/bodufabudunezu.pdf
    • https://cdn.shopify.com/s/files/1/0439/4627/9080/files/uncompress_file_online.pdf
    • https://cdn.shopify.com/s/files/1/0439/1125/0075/files/nisuzagix.pdf
    • https://cdn.shopify.com/s/files/1/0440/8786/9592/files/68979347166.pdf
    • https://cdn.shopify.com/s/files/1/0432/4058/7431/files/nafofifuxesowesaxevij.pdf
    • https://cdn.shopify.com/s/files/1/0432/0290/4222/files/bsc_nursing_1st_year_biochemistry_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/6175/5560/files/vawepituvajegase.pdf
    • https://cdn.shopify.com/s/files/1/0436/9966/7112/files/camillo_sitte_the_art_of_building_cities.pdf
    • https://cdn.shopify.com/s/files/1/0430/5525/1605/files/nolosifesexajaruzitu.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_off00006a49.bin
bb782a0f9fdcde698c1f39258dd1aca65d3db4b0ed4c6c3642b79cfcbb08d915		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A49 5700 bytes
font_01_sfnt_off00007db6.bin
04e791807bbd96350d0257b718e6ca7c248559dba14fc27278c214b222f4a7ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DB6 10932 bytes

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