Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3b3a159de167482…

MALICIOUS

PDF

47.1 KB Created: 2020-08-23 01:32:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4db098896246b25f75f1d47b86984121 SHA-1: 006354b80a51265a50de5a23fca6e4c322fd62a0 SHA-256: a3b3a159de16748257f8e39f895c1c39d9bb3334c25d1f7687d911a5d3354167
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and embedded URLs suggest a lure related to an 'inventory count sheet' to entice users to click the malicious link. The PDF_SEO_LINK_FARM heuristic indicates the document is part of a larger scheme to generate traffic through numerous external links.

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=inventory+count+sheet+meaning
    • http://files.jimmydazecomics.com/uploads/1/3/1/3/131379434/ad4418c2c0d.pdf
    • http://files.jessicamixon.com/uploads/1/3/1/4/131438567/5333b54267ffa.pdf
    • http://files.torchpub.com/uploads/1/3/1/4/131406068/9882094.pdf
    • https://cdn.shopify.com/s/files/1/0435/3284/5207/files/ordering_fractions_from_least_to_greatest_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/4300/4322/files/isaac_babel_red_cavalry.pdf
    • https://cdn.shopify.com/s/files/1/0437/9531/6896/files/module_8_basic_aerodynamics_book.pdf
    • https://cdn.shopify.com/s/files/1/0437/7152/7325/files/24615794412.pdf
    • https://cdn.shopify.com/s/files/1/0429/0537/0787/files/zalibidugiritabevodesasiv.pdf
    • https://cdn.shopify.com/s/files/1/0437/8863/2213/files/is_it_worth_having_a_vpn.pdf
    • https://cdn.shopify.com/s/files/1/0433/0101/1614/files/mikazusuxika.pdf
    • https://cdn.shopify.com/s/files/1/0462/4944/3482/files/zizuzoru.pdf
    • https://cdn.shopify.com/s/files/1/0433/5576/6942/files/46201900741.pdf
    • https://cdn.shopify.com/s/files/1/0434/0675/3948/files/zuvelebefavikamif.pdf
    • https://cdn.shopify.com/s/files/1/0440/1024/2198/files/35768049924.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_off00007a07.bin
ce0e1f2eade31fb741cada9ecf292a1191375d3fd7be09450e6569baf66a81d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A07 5280 bytes
font_01_sfnt_off00008bda.bin
db5034ebcd04327898d041338b104bab5ac7981c43b354cf62d4e11a8de85bfc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BDA 10488 bytes

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