Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2a3b6801a568a26…

MALICIOUS

PDF

44.9 KB Created: 2020-08-21 20:32:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 641833bbf52381e80e9da73e816b5c9e SHA-1: b47444a121cbfdbf3e10d6cb174df1e2fd86702d SHA-256: a2a3b6801a568a26709cd5799ef75ff833e31249a3a4e288c4fafd1e9fdd9bea
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with the primary link pointing to a known malicious redirector. This suggests the document is designed to lure users into clicking malicious links, potentially for phishing or to download further malware. The document body contains garbled text but also includes the URL that triggered the malicious redirector heuristic.

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=kundli+software+for+mac
    • http://files.monikamdesign.net/uploads/1/3/1/0/131070911/7a76778ec90dd44.pdf
    • https://cdn.shopify.com/s/files/1/0433/8846/9398/files/causes_of_abnormal_uterine_bleeding.pdf
    • https://cdn.shopify.com/s/files/1/0431/2095/1445/files/95893559128.pdf
    • https://cdn.shopify.com/s/files/1/0428/9812/9059/files/85048022525.pdf
    • https://cdn.shopify.com/s/files/1/0434/1619/1138/files/amazing_adventures_rpg.pdf
    • https://cdn.shopify.com/s/files/1/0437/3820/2273/files/death_penalty_argumentative_essay_against.pdf
    • https://cdn.shopify.com/s/files/1/0436/9914/2810/files/19940054282.pdf
    • https://cdn.shopify.com/s/files/1/0429/6402/5493/files/3759718547.pdf
    • https://cdn.shopify.com/s/files/1/0430/8910/0951/files/didunine.pdf
    • https://cdn.shopify.com/s/files/1/0450/8103/4917/files/bajaj_finserv_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0437/1690/3080/files/delojev.pdf
    • https://cdn.shopify.com/s/files/1/0439/7583/5806/files/gmp_good_manufacturing_practice.pdf
    • https://cdn.shopify.com/s/files/1/0431/5892/9570/files/sopobato.pdf
    • https://cdn.shopify.com/s/files/1/0440/5254/5701/files/catalogo_natura_ciclo_14_2020.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006555.bin
8e5ecfb84408a7369f2e22a5040f8c697bb517bf7bbe9648417322251b1292d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6555 3376 bytes
font_01_sfnt_off00007171.bin
19aeb1ba34805b9a20b21faf21c932282b088de73a285b3c4953b0297734d591		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7171 5228 bytes
font_02_sfnt_off00008334.bin
d01779129b43f6d8fad131626a5bba457c73aef29cd72f246e92ce9166d45bb2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8334 10196 bytes

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