Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ab71014821b02bd…

MALICIOUS

PDF

50.4 KB Created: 2020-08-05 03:53:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74b351303633febf86a8905bc2b14add SHA-1: d25cf3146ff177f8b0d8e6cd91f6c7362e4237ba SHA-256: 3ab71014821b02bd0aa3cc6e5f448748e67ac5fddc4d5936b0f71d45d69e0138
120 Risk Score

Malware Insights

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

The PDF document contains a mass of external links, masquerading as book reviews, designed to lead users to a redirector. The primary malicious link, https://ttraff.ru/pify?keyword=old+man+and+the+sea+book+review+pdf, is identified as a known malicious redirector. The document's structure and link farm indicate a social engineering tactic to drive traffic to potentially 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=old+man+and+the+sea+book+review+pdf
    • http://files.midcopw.net/uploads/1/3/1/3/131384777/7380322.pdf
    • http://files.allsaintsws.net/uploads/1/3/1/1/131164152/2054585.pdf
    • http://pigovawi.iwa-tellmyanmar.com/uploads/1/3/1/4/131406202/xatulegidofikamedu.pdf
    • http://files.mstreetfreerunning.com/uploads/1/3/2/6/132682681/zuporidimudi-bedajizujamin-fusunivikexi.pdf
    • https://cdn.shopify.com/s/files/1/0429/2640/7843/files/mikademe.pdf
    • https://cdn.shopify.com/s/files/1/0437/6713/6413/files/french_language_learning_book.pdf
    • https://cdn.shopify.com/s/files/1/0428/2833/3219/files/assam_tribune_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/99781003244.pdf
    • https://cdn.shopify.com/s/files/1/0430/2556/3799/files/6938695771.pdf
    • https://cdn.shopify.com/s/files/1/0435/5201/4495/files/68950951250.pdf
    • https://cdn.shopify.com/s/files/1/0437/1300/3674/files/wejeloredebinetozo.pdf
    • https://cdn.shopify.com/s/files/1/0434/2241/7047/files/biogas_power_generation_plant.pdf
    • https://cdn.shopify.com/s/files/1/0433/0949/8536/files/92032254874.pdf
    • https://cdn.shopify.com/s/files/1/0434/1520/8098/files/xokiwimatirijewukiw.pdf
    • https://cdn.shopify.com/s/files/1/0438/4237/1741/files/joxixi.pdf
    • https://cdn.shopify.com/s/files/1/0438/4423/9510/files/32628692092.pdf
    • https://cdn.shopify.com/s/files/1/0432/5844/5979/files/41272661248.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_off00008515.bin
6f4a81d7200beeb02e744c1e958ff77c62110e85b0bf22b9289a014eaf0198a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8515 5664 bytes
font_01_sfnt_off00009832.bin
55b476cac78788c525ae8bad4061dc83a6f8839867a510e36b6fc1367b6f7f87		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9832 10496 bytes

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