Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd71c2e7a4ed8a20…

MALICIOUS

PDF

41.6 KB Created: 2020-08-17 04:05:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69a0725620550a51bbbbc9009a32914f SHA-1: d7f0f165a890e57835d3dd8cb082b46967588216 SHA-256: dd71c2e7a4ed8a20d4bdb217af072742798f1590e0bd0daf036f6064841cdff7
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying a malicious redirector. The document body, though partially corrupted, contains a URL that appears to be part of a link farm designed to manipulate search engine results. The primary malicious URL identified is https://ttraff.cc/pify?keyword=rustoleum+cabinet+transformations+espresso+before+and+after, which is likely used to redirect users to a malicious site.

Heuristics 3

  • 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.
  • 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=rustoleum+cabinet+transformations+espresso+before+and+after
    • http://tifinano.tutorslink123.com/uploads/1/3/0/8/130814328/zulawanuxaj_vanubol_maxowe_bipawoma.pdf
    • http://files.booksplusws.com/uploads/1/3/1/3/131398374/kanaf.pdf
    • http://files.thatclass.org/uploads/1/3/1/4/131406060/2381260.pdf
    • http://files.mr-stevens.com/uploads/1/3/0/7/130776864/zoxakaso.pdf
    • http://files.queridouniverso.com/uploads/1/3/1/3/131381614/1d12eec.pdf
    • https://cdn.shopify.com/s/files/1/0431/6240/2967/files/printable_animal_coloring_book.pdf
    • https://cdn.shopify.com/s/files/1/0437/0438/5690/files/54482096215.pdf
    • https://cdn.shopify.com/s/files/1/0429/5314/6517/files/mabodokarunofubibuke.pdf
    • https://cdn.shopify.com/s/files/1/0437/7424/7063/files/esl_business_english_conversation.pdf
    • https://cdn.shopify.com/s/files/1/0430/0383/8615/files/important_days_theme_2020.pdf
    • https://cdn.shopify.com/s/files/1/0434/3929/2577/files/roll_up_banner_template.pdf
    • https://cdn.shopify.com/s/files/1/0428/1679/8883/files/58180201359.pdf
    • https://cdn.shopify.com/s/files/1/0438/4640/2213/files/gojidadarekigugope.pdf
    • https://cdn.shopify.com/s/files/1/0432/1991/0813/files/100_accounting_interview_questions.pdf
    • https://cdn.shopify.com/s/files/1/0431/8350/5562/files/34469494554.pdf
    • https://cdn.shopify.com/s/files/1/0430/7278/2489/files/bejin.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_off0000627f.bin
aaf11b97679fa079c76d8ce8695b297d1a713d214bc06bfd5b85c5675252a1b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x627F 5448 bytes
font_01_sfnt_off000074ec.bin
283a42f4273f46b5cd41baebabcdb476f431594d9d0b95bc0479f8240922df98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74EC 10592 bytes

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