Malicious PDF — malware analysis report

Static analysis result for SHA-256 548214a58a2fece5…

MALICIOUS

PDF

47.5 KB Created: 2020-07-26 22:49:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6135da4d03978a882ddbaa76ad1c1576 SHA-1: 9100658f5e14056605ca1c686f1e46d0479bbbae SHA-256: 548214a58a2fece5ac9c49e0f626117167e337149d6394faee319dd0c5e46a89
140 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which is a common technique for delivering malware. Additionally, it exhibits a PDF link farm and instructs the user to enable macros or editing, indicating a social engineering lure. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

Heuristics 4

  • 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.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • 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=find+duplicate+values+in+multiple+sheets+excel
    • http://files.djaneecreations.com/uploads/1/3/1/4/131438324/rojad.pdf
    • http://files.henriettaallsports.com/uploads/1/3/0/8/130873851/mugub.pdf
    • http://files.guavachocolates.com/uploads/1/3/2/6/132695990/7a7218f8.pdf
    • https://cdn.shopify.c
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/17603630482.pdf
    • https://cdn.shopify.com/s/files/1/0432/5743/0176/files/bozonikalapubinapot.pdf
    • https://cdn.shopify.com/s/files/1/0428/6332/9446/files/jidixolukuzodosozitozo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2658/7549/files/7559790641.pdf
    • https://cdn.shopify.com/s/files/1/0437/2670/0696/files/81173818281.pdf
    • https://cdn.shopify.com/s/files/1/0432/4058/7431/files/4315957981.pdf
    • https://cdn.shopify.com/s/files/1/0438/9571/8040/files/46839052838.pdf
    • https://cdn.shopify.com/s/files/1/0431/6377/9240/files/zanun.pdf
    • https://cdn.shopify.com/s/files/1/0434/6236/1245/files/kufasudas.pdf
    • https://cdn.shopify.com/s/files/1/0430/5184/3737/files/39207919744.pdf
    • https://cdn.shopify.com/s/files/1/0431/4093/9933/files/dodejusotokibatipeteramo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0776/9750/files/tadodumusepelu.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_off00007b90.bin
f90e29bae871c9b5386af9fa5edff21576cb1810c2c7e6648e67a59682ea3668		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B90 5072 bytes
font_01_sfnt_off00008ca3.bin
9bdb015818938a07c6aa5ff6be0f8fbf516e6c77628139e9d6f54db0c35316c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CA3 10472 bytes

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