Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd3cae55fda4414f…

MALICIOUS

PDF

61.9 KB Created: 2020-08-09 00:44:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47d62658fb6ffa9e8f63a56f779e0ee5 SHA-1: 3331db867ddedfdac915404b963a8a9f1f325956 SHA-256: cd3cae55fda4414f4db6242425fface00156996b5c2f86fb007e6ad541e3d830
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, disguised as IELTS exam preparation materials. The primary malicious URL identified is https://ttraff.cc/pify?keyword=ielts+general+writing+task+2+samples+with+answers+pdf. This indicates a social engineering attack aiming to trick users into visiting a compromised or 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=ielts+general+writing+task+2+samples+with+answers+pdf
    • http://files.rangersafc.co.nz/uploads/1/3/2/6/132681836/1fe2a7c1b.pdf
    • http://bulute.srhdonline.org/uploads/1/3/1/4/131453698/1e407b.pdf
    • http://files.newyorkstategrandcouncil.com/uploads/1/3/1/4/131437538/bapemo.pdf
    • https://cdn.shopify.com/s/files/1/0436/3301/6982/files/27809513717.pdf
    • https://cdn.shopify.com/s/files/1/0429/1851/0745/files/15598178794.pdf
    • https://cdn.shopify.com/s/files/1/0435/6639/9647/files/resif.pdf
    • https://cdn.shopify.com/s/files/1/0434/0809/7445/files/wing_chun_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/8390/6724/files/marriage_certificate_form_madhya_pradesh.pdf
    • https://cdn.shopify.com/s/files/1/0430/9801/3850/files/keto_food_menu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0985/1048/files/16597465400.pdf
    • https://cdn.shopify.com/s/files/1/0433/8361/9736/files/70385494596.pdf
    • https://cdn.shopify.com/s/files/1/0437/8466/7297/files/william_foley_anthropological_linguistics.pdf
    • https://cdn.shopify.com/s/files/1/0432/2584/1821/files/zorabaxomamezu.pdf
    • https://cdn.shopify.com/s/files/1/0430/7193/0529/files/similes_and_metaphors_ks2.pdf
    • https://cdn.shopify.com/s/files/1/0440/6591/5032/files/indian_calendar_2016_with_holidays.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_off0000b33e.bin
a28a6eb7eaba238fe3a5bdb4aced6019b72797b8e447172a5d380ee8fa9fde08		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB33E 5680 bytes
font_01_sfnt_off0000c680.bin
46aff532379038fa3978efddb469e3742e4f6b41f8b82dfa5e40fb1e13d55e15		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC680 10500 bytes

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