Malicious PDF — malware analysis report

Static analysis result for SHA-256 36e3dd9dc0a907ba…

MALICIOUS

PDF

43.1 KB Created: 2020-09-19 21:28:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5903efa3135533ff610ee0ce397f8f29 SHA-1: 56cee76b83a24fd2f1af17e05a0d23cd0c25dfd3 SHA-256: 36e3dd9dc0a907bacedfbfac0ee1338195d5445a0e2420c3a2aa5ca457aff297
120 Risk Score

Malware Insights

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

The PDF document was identified as malicious due to its inclusion of a link farm containing numerous external links. One of these links, https://ttraff.club/wix?keyword=lord+of+the+flies+discussion+questions+chapter+2, points to known malicious redirector infrastructure. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of multiple PDF links indicates an attempt to broaden the attack surface or distribute further malicious content.

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.club/wix?keyword=lord+of+the+flies+discussion+questions+chapter+2
    • https://a7051dfd-73e4-4fa4-9d4c-7c97c0943246.filesusr.com/ugd/544e7e_87bb2219887349fa9cb5633fed089479.pdf?index=true
    • https://fa60375f-7c6c-44b9-b230-7e252d766b78.filesusr.com/ugd/a9248e_eb299cc1ef974f6abaec799c766ee436.pdf?index=true
    • https://08d18d56-aff4-4e72-9f87-16f3f05554a6.filesusr.com/ugd/4f270c_81d326a4c42e4546b8c764ff49763706.pdf?index=true
    • https://79da6714-6193-4adb-b75b-fa360b1999cc.filesusr.com/ugd/70e5f7_67a4676ec89249c0af2ee1e3d87d7c9f.pdf?index=true
    • https://ed76c8ac-da4e-417b-b90a-4502761c4a6e.filesusr.com/ugd/61b8bf_ae18c9938f214b3aa6fc3e085d5e2b60.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0438/6642/3456/files/league_of_legends_stuck_at_authenticating.pdf
    • https://cdn.shopify.com/s/files/1/0433/0936/7461/files/uses_of_carica_papaya.pdf
    • https://cdn.shopify.com/s/files/1/0460/4185/8212/files/97663178456.pdf
    • https://cdn.shopify.com/s/files/1/0437/5812/5213/files/white_mountain_ice_cream_maker_parts.pdf
    • https://cdn.shopify.com/s/files/1/0477/9989/4175/files/hinduism_and_buddhism_develop_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/8103/1064/files/45487762190.pdf
    • https://cdn.shopify.com/s/files/1/0433/0638/5576/files/tusisonadi.pdf
    • https://cdn.shopify.com/s/files/1/0429/9181/2771/files/25787670374.pdf
    • https://cdn.shopify.com/s/files/1/0433/6982/4407/files/hd_screen_photo.pdf
    • https://1fd79222-1afc-4985-aeb7-c703cd81872d.filesusr.com/ugd/067ecb_f853d509c84d4ff69311ff8126a80201.pdf?index=true
    • https://e0093e45-feb0-4279-ae13-3efd5a50de17.filesusr.com/ugd/53c654_5ffd3e60231a47c997043e5cf27593ad.pdf?index=true
    • 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/
    • https://cdn.shopify.com/s/files

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b6a.bin
d6d1578672679f0fd44aa0fc01d6b95a7b306da85a6bbbd7e38480d1181f985c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B6A 5440 bytes
font_01_sfnt_off00007deb.bin
b413a159bd5a18c3fa78f76a4ac3b1fb44b2190ac53492f43a3c5376a99372a0
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DEB 9676 bytes