Malicious PDF — malware analysis report

Static analysis result for SHA-256 d72db35cf168ee7d…

MALICIOUS

PDF

56.2 KB Created: 2020-08-19 07:53:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43fa926158b14adc54eb243ea1116328 SHA-1: 30158eb0d0e38880a5dea004e7be843e0fa510f1 SHA-256: d72db35cf168ee7d85e061145b76eb0ff6f04b998a2568776887e9059d565348
120 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as 'Monkeys and forests ielts answers'. This link, 'https://ttraff.cc/pify?keyword=monkeys+and+forests+ielts+answers', is designed to lure the user into clicking it. The PDF also hosts a large number of external links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic to distribute malicious content.

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=monkeys+and+forests+ielts+answers
    • http://files.ozarkbelleboutique.com/uploads/1/3/2/6/132682745/7048b783bc6f5.pdf
    • https://cdn.shopify.com/s/files/1/0435/5473/4235/files/marriage_certificate_form_telangana.pdf
    • https://cdn.shopify.com/s/files/1/0429/2149/2643/files/primed_to_perform_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/5468/6620/files/tadodiwuwogolorowumes.pdf
    • https://cdn.shopify.com/s/files/1/0431/6394/3074/files/rirozubun.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43396058945.pdf
    • https://cdn.shopify.com/s/files/1/0431/2272/0922/files/10791280582.pdf
    • https://cdn.shopify.com/s/files/1/0429/8702/8639/files/accounting_warren_25th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0429/2971/7407/files/bigigi.pdf
    • https://cdn.shopify.com/s/files/1/0428/6644/2406/files/36210263978.pdf
    • https://cdn.shopify.com/s/files/1/0428/3239/6447/files/8096100567.pdf
    • https://cdn.shopify.com/s/files/1/0431/3546/7682/files/interview_evaluation_form.pdf
    • https://cdn.shopify.com/s/files/1/0434/9722/6402/files/bofusosiwo.pdf
    • https://cdn.shopify.com/s/files/1/0427/9028/9574/files/wedadunubifevupuperor.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_off00009df5.bin
0bcbb4221582d9ab99e4e8e1d40deb69d5763f014284fd3c4f6ada85051978fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DF5 5164 bytes
font_01_sfnt_off0000afb6.bin
1f2ac9ffeb9ae3c07419635b69590a72ef620b4eaa01a851df4b9de634f60180		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAFB6 10780 bytes

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