Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bd84fd23116a84c…

MALICIOUS

PDF

44.9 KB Created: 2020-08-17 02:48:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ff7dabe28cd700b3e72aa9805f318a4 SHA-1: b9aea5eaceb3b38cec1d91cafa1b19fac67655dd SHA-256: 9bd84fd23116a84c55a9b5611b014ae9f4094a6b052cd6b787c3d6cd089dc3bc
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, many of which point to external PDF files hosted on various domains. One of the primary links directs to a known malicious redirector at 'https://ttraff.ru/pify?keyword=funny+thought+provoking+questions+with+answers'. This suggests the document is designed to lure users into clicking through a series of links, potentially leading to malicious content or further compromise.

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=funny+thought+provoking+questions+with+answers
    • http://files.bizoncustoms.com/uploads/1/3/0/8/130813913/3587fd26f5e1f5.pdf
    • http://files.minneysyachtsurplus.com/uploads/1/3/1/8/131872285/7373998.pdf
    • http://files.kenoshamedia.org/uploads/1/3/1/4/131483184/luzowugagavulu.pdf
    • http://weritoko.bellstobritain.com/uploads/1/3/1/6/131607163/5897340.pdf
    • http://koniziwi.karynwilliamson.com/uploads/1/3/1/6/131606156/rivatozedom_vowala_tekuvinox.pdf
    • https://cdn.shopify.com/s/files/1/0431/2917/6232/files/zuwelidirom.pdf
    • https://cdn.shopify.com/s/files/1/0435/4228/2399/files/foselobexobezadadovot.pdf
    • https://cdn.shopify.com/s/files/1/0429/3538/6265/files/aiag_spc_2nd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0428/4776/4636/files/words_ending_in_ism.pdf
    • https://cdn.shopify.com/s/files/1/0432/3124/8539/files/39722701246.pdf
    • https://cdn.shopify.com/s/files/1/0434/0921/1549/files/gakezigaketuboje.pdf
    • https://cdn.shopify.com/s/files/1/0434/5928/1048/files/33198000177.pdf
    • https://cdn.shopify.com/s/files/1/0431/6486/0580/files/escape_from_tarkov_beginner_guide.pdf
    • https://cdn.shopify.com/s/files/1/0436/7400/9753/files/acgih_book.pdf
    • https://cdn.shopify.com/s/files/1/0435/5771/6117/files/23777191982.pdf
    • https://cdn.shopify.com/s/files/1/0435/2969/9482/files/classical_guitar_tabs.pdf
    • https://cdn.shopify.com/s/files/1/0437/8260/2913/files/awg_wire_chart.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_off00006fa0.bin
3e1d5d45e206dc2f996d3661ac274ecd422fc4fdb1093e03d0be835f1431c930		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA0 5448 bytes
font_01_sfnt_off00008244.bin
b01c033e7a0c63477e3569cceab9cb3f3fe68ba40d0d1c3b08c80d7a6ea67c00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8244 10620 bytes

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