Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf2b041c4126cbda…

MALICIOUS

PDF

51.1 KB Created: 2020-09-18 06:08:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd79911b27f3d6fab0e6be215d6c02e6 SHA-1: 6e891f391415304622b9b09c1abde0c921f845be SHA-256: cf2b041c4126cbda86fb916f2255cb213de43bbe0f6ff05af61553f8344227b8
150 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, disguised as a movie title. The PDF also contains a link farm pointing to other PDFs, likely for SEO poisoning or to host further malicious content. The ML classifier strongly indicated maliciousness. The primary attack vector is a user clicking the embedded malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=plug+love+2+full+movie
    • http://naxekoxa.nnwla.com/uploads/1/3/1/4/131437515/8baa87.pdf
    • http://files.ibuysfv.com/uploads/1/3/0/9/130969176/timezo-waweduserelegu-bakivu-rerakadulovube.pdf
    • http://jimadokos.shopmerricks.com/uploads/1/3/1/3/131380349/sujorutudopasa.pdf
    • http://files.darrellmatsumoto.com/uploads/1/3/1/4/131407080/kimupenu-topofape.pdf
    • http://files.fullmoonfarmnc.com/uploads/1/3/0/7/130738876/5228990.pdf
    • https://b90743d4-2cf5-45e5-9af9-137c7d48bc9b.filesusr.com/ugd/954c8b_b737fb04c25a4df6afb944d18506680b.pdf?index=true
    • https://60f65dc7-23a0-4007-bd6e-33afd07fe74b.filesusr.com/ugd/ac8c68_97e618690dac465990d1da25a92114ca.pdf?index=true
    • https://d75576ea-4c64-4aa7-a331-18666a800d49.filesusr.com/ugd/7c3584_8f0b118acacb4ce8b7ffbd2c3d160fed.pdf?index=true
    • https://d5f1c30a-9f97-40fa-8101-6222c16be1c0.filesusr.com/ugd/9df9d6_dfc82eeb778345b988b553740a4ed5a3.pdf?index=true
    • https://74a11ab9-c606-4c5d-b4a1-ce636a483651.filesusr.com/ugd/90423f_56aa1706a6fc4d279f290abfc7beb95c.pdf?index=true
    • https://d780874b-0603-4eb7-a96b-8875614f3525.filesusr.com/ugd/e6092c_917c33da170842beb4ebd80bcdbf798b.pdf?index=true
    • https://d0204aa8-053a-4b9b-9f40-4ef6ff1ea5aa.filesusr.com/ugd/e33828_b9e80bf746e742efb3c15cb8022f05e1.pdf?index=true
    • https://3c7c751d-5ef8-41a0-998b-5febbbcf25ec.filesusr.com/ugd/c162b3_33836c9a14a44b3ba19d7eb91e25ebe6.pdf?index=true
    • https://1d63ea03-59da-4dd1-a650-53c2b10b3f7a.filesusr.com/ugd/9ea91e_4d36152683be4d7ab346d977acf33f4d.pdf?index=true
    • https://68221b14-34f9-4c1d-a01e-27c8e32c0eb2.filesusr.com/ugd/bc0b97_4b023ac9756043e99a4bbd296d6788d7.pdf?index=true
    • https://2f6fa76a-164d-480f-8a09-a81d7b5aad3b.filesusr.com/ugd/53c654_28561dde0d9a4b419232c5be2ff2979d.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://68221b14-34f9-4c1d-a01e-27c8e32c0eb2.filesusr.com/ugd/bc0b97_4b023ac9756043

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000640b.bin
c21fcfbc4be7a73deb1961a257efddc81125b38288793eb21f38c4055e24ffa1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x640B 4796 bytes
font_01_sfnt_off00007460.bin
597ff30cb2787370cb305089990c2bc938ad67acc8905e104a2bfe96990fc64a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7460 5840 bytes
font_02_sfnt_off000084bb.bin
b27a35bb54a5f7c9aadc7cca718d9087e1504e7108b3e8493512b984066d224a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84BB 10476 bytes
font_03_sfnt_off0000a8c4.bin
fb783ff4fc5ff54d970f148608fd481e2be95bc962ea050edbcdf2b250f50627		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA8C4 16652 bytes

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