Malicious PDF — malware analysis report

Static analysis result for SHA-256 54a3a1425a96f4db…

MALICIOUS

PDF

40.7 KB Created: 2020-08-13 21:40:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54a5f2a1f1359c23af50d6bbc8c4e615 SHA-1: b8296621bbd8ef4374ec3189b98f807a3de6e953 SHA-256: 54a3a1425a96f4db758446a0dff6f8e5096635dd13af5afed89cebf9037c5ba1
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to PDF files hosted on various domains, including a known malicious redirector at ttraff.ru. This suggests a link farm or SEO poisoning attack designed to direct users to malicious content. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious redirector and the sheer volume of links strongly indicate a malicious intent to redirect users to harmful sites.

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=weekly+gantt+chart+template
    • http://kewikatig.dearwestergrain.com/uploads/1/3/0/7/130776102/gumun.pdf
    • http://files.smartmobilityinc.com/uploads/1/3/0/7/130776267/vujakaj_xuwomuwiwafa_jutitovigitaxad.pdf
    • http://files.andyyangcounseling.com/uploads/1/3/0/7/130775950/tufanuruvukidunuxere.pdf
    • http://files.ilketshallstandrew.com/uploads/1/3/1/3/131398367/9743574.pdf
    • https://cdn.shopify.com/s/files/1/0433/0350/1989/files/vavefosavebevivugane.pdf
    • https://cdn.shopify.com/s/files/1/0432/1660/1249/files/gesoraxazusad.pdf
    • https://cdn.shopify.com/s/files/1/0433/0828/6105/files/durable_power_of_attorney_form_florida.pdf
    • https://cdn.shopify.com/s/files/1/0438/2549/6221/files/wojatikipapetupuvubabas.pdf
    • https://cdn.shopify.com/s/files/1/0429/6713/8470/files/organic_chemistry_bsc_1st_year_book.pdf
    • https://cdn.shopify.com/s/files/1/0428/2603/9452/files/global_physical_damage_poe.pdf
    • https://cdn.shopify.com/s/files/1/0434/0488/6166/files/26675917136.pdf
    • https://cdn.shopify.com/s/files/1/0427/7927/9527/files/moluwoj.pdf
    • https://cdn.shopify.com/s/files/1/0432/5713/5257/files/63792053484.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/budazasinopuxa.pdf
    • https://cdn.shopify.com/s/files/1/0434/0436/1895/files/juduvobumekamami.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_off00006344.bin
3ef906289aebd7d7adce8f760e928e94012e28b9547627f6482f17ca97cd6d7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6344 5348 bytes
font_01_sfnt_off00007560.bin
d34245521c9d6bc8df5119b345fd99bcdf1fecc3820adfa353882aec2793e0f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7560 9664 bytes

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