Malicious PDF — malware analysis report

Static analysis result for SHA-256 33202aa118442cd9…

MALICIOUS

PDF

50.1 KB Created: 2020-08-25 10:24:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02634363ce913b6b52547f48872ac177 SHA-1: d33152b065aba59208bfc9e52f2e646dbe5edc1f SHA-256: 33202aa118442cd9fecc43e665cd456d85bf2f7e8cfd7f7307242e478eae498e
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, a technique often used to obscure malicious destinations or to participate in SEO poisoning. One of these links points to a known malicious redirector, ttraff.ru, which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.ru/pify?keyword=go+effortless+energy+complaints+performance
    • http://files.photosbyjamaal.com/uploads/1/3/1/1/131163667/somafijexur_fitobimopo_bafiwofixedap.pdf
    • http://files.kbygradio.com/uploads/1/3/0/7/130775249/2249654.pdf
    • http://files.winonarootriverpf.org/uploads/1/3/1/4/131406173/judunizumapanoze.pdf
    • http://files.dedunlop.com/uploads/1/3/1/3/131384024/povuvofite_zubibun_livavorusexa.pdf
    • https://cdn.shopify.com/s/files/1/0432/8423/4398/files/c_generic_method.pdf
    • https://cdn.shopify.com/s/files/1/0436/7243/6889/files/bakery_story_apk_hack.pdf
    • https://cdn.shopify.com/s/files/1/0447/2622/3001/files/accounts_payable_and_accounts_receivable.pdf
    • https://cdn.shopify.com/s/files/1/0438/4541/9165/files/congenital_neurological_disorders.pdf
    • https://cdn.shopify.com/s/files/1/0436/4215/9257/files/boy_scout_oath_in_sign_language.pdf
    • https://cdn.shopify.com/s/files/1/0441/2624/0920/files/neopets_avatar_guide.pdf
    • https://cdn.shopify.com/s/files/1/0438/8818/1400/files/xojigijibefizefosafafosob.pdf
    • https://cdn.shopify.com/s/files/1/0429/7352/8223/files/4733289391.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/
    • https://cdn.shopify.com/s/files/1/0432/8

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ce1.bin
0699317c9a114ca8b3f9a56d41b8e115ab3bbe460ac61d089c4604cb168ef429		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CE1 5468 bytes
font_01_sfnt_off00007f78.bin
261df88ce0db70d5544a8ae3df9d314f656bcda4c34882419eacd529d46e7daa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F78 11340 bytes
font_02_sfnt_off0000a617.bin
2c5f1a2e3d9f683f6a217a47aeaaae813f7d4ef732a5ff54a929695507d09140		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA617 16092 bytes

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