Malicious PDF — malware analysis report

Static analysis result for SHA-256 45352dad53daaaf7…

MALICIOUS

PDF

38.9 KB Created: 2020-08-07 20:07:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 797b17955cf19d00c6a6524fa4304b1b SHA-1: fe784eb7763cf6187072c4d0da008e0db0d57ccd SHA-256: 45352dad53daaaf7d4d8f725c2e2268741d31501da9e94e49fc7bffb8ab1b0d8
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating it points to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'Apa citation manual pdf' and includes the primary malicious URL. This suggests a phishing attempt designed to redirect users to malicious content under the guise of providing a citation manual.

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.com/pify?keyword=apa+citation+manual+pdf
    • http://files.supportingpresence.com.au/uploads/1/3/0/7/130738548/8d04f5872646258.pdf
    • http://files.cornerstonechildcarepreschool.com/uploads/1/3/1/3/131380078/ramigigam.pdf
    • http://files.caringinc.net/uploads/1/3/1/8/131871698/suvosekow.pdf
    • http://files.rripmusic.com/uploads/1/3/2/6/132681992/bfe96f7ab4c35.pdf
    • https://cdn.shopify.com/s/files/1/0434/9971/6770/files/82336566865.pdf
    • https://cdn.shopify.com/s/files/1/0430/9280/3744/files/jozuxapurulotojiruji.pdf
    • https://cdn.shopify.com/s/files/1/0431/0997/4169/files/prefix_and_suffix_lesson_plan.pdf
    • https://cdn.shopify.com/s/files/1/0448/4985/6669/files/livre_les_4_accords_toltques.pdf
    • https://cdn.shopify.com/s/files/1/0430/9359/0167/files/tokum.pdf
    • https://cdn.shopify.com/s/files/1/0429/9934/9407/files/ecologia_microbiana_y_microbiologia_ambiental.pdf
    • https://cdn.shopify.com/s/files/1/0429/8607/8369/files/fresco_logic_usb_display_driver.pdf
    • https://cdn.shopify.com/s/files/1/0431/6630/2376/files/28689826232.pdf
    • https://cdn.shopify.com/s/files/1/0431/9261/5073/files/785818290.pdf
    • https://cdn.shopify.com/s/files/1/0439/0433/6040/files/nimejipudofukefoviv.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_off00005c6d.bin
8ce64d6d09556410fe35a7129b9d044c3066ba1ed48ac9da952c7984199b1028		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C6D 5016 bytes
font_01_sfnt_off00006d73.bin
572b4a96af23f6696f11ef958906f4f7e879b5152f9c19a20278e94577890540		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D73 9868 bytes

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