Malicious PDF — malware analysis report

Static analysis result for SHA-256 10bcb1ed0c06260c…

MALICIOUS

PDF

58.9 KB Created: 2020-09-01 06:01:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cde145a493feebe86d08db5139b3a82a SHA-1: f293efd9debbe4553166cee486e51760d7f78ef2 SHA-256: 10bcb1ed0c06260ca5e0c2d41ebda86b5cfd7df4bb2f82bd24add1492ed37af3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to a redirector service. The primary malicious URL, 'https://ttraff.cc/wix?keyword=2011+all+hollywood+movies+list', is flagged as malicious. This suggests the document is part of a link farm or SEO poisoning campaign designed to redirect users to malicious content. No scripts were extracted, but the embedded links are the primary attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.cc/wix?keyword=2011+all+hollywood+movies+list
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static.usrfiles.com/ugd/26938b_4654d48f4c6249849c010fb2e03fd4c6.pdf
    • https://static.usrfiles.com/ugd/b8c837_35091a7f37a04ff18d7484c9c21b2d78.pdf
    • https://static.usrfiles.com/ugd/1f6d71_22608d546de2459cb0c0b80c16a6a30c.pdf
    • https://static.usrfiles.com/ugd/4d400c_8e241aba1eb54062a51100d65e06bb0f.pdf
    • https://static.usrfiles.com/ugd/07625c_ac1c5fa080984d41a61ebf2520d59163.pdf
    • https://static.usrfiles.com/ugd/e745be_1022f61908874345829858447dea74b4.pdf
    • https://static.usrfiles.com/ugd/45fd81_4111208b445b45be87366e6adb7af93b.pdf
    • https://static.usrfiles.com/ugd/6c032c_1373dd658ccd4447ab7fcb1d1c857f55.pdf
    • https://static.usrfiles.com/ugd/b8c837_75d174eab1064ba5aaa37a2a460d1a06.pdf
    • https://static.usrfiles.com/ugd/2e16aa_64b6e205005e4d95bf2a1618df5f8fd3.pdf
    • https://cdn.shopify.com/s/files/1/0463/1858/3973/files/genel_muhasebe_1_vize_sorular.pdf
    • https://cdn.shopify.com/s/files/1/0437/0009/3083/files/gadofisojifemi.pdf
    • https://cdn.shopify.com/s/files/1/0430/9562/1796/files/19894320601.pdf
    • https://cdn.shopify.com/s/files/1/0460/1354/6657/files/annamalai_songs_starmusiq._fun.pdf
    • https://cdn.shopify.com/s/files/1/0432/3190/3902/files/bipolar_self_assessment_test.pdf
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/14569200274.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000998b.bin
8479d910b7d1bb0881ce22ce4b8f416a8e8872ec958295496ae53b6d6fa5df39		 pdf-font-stream PDF embedded font (sfnt) at offset 0x998B 5136 bytes
font_01_sfnt_off0000ab1f.bin
bedb76a1585260af413db3253a22e8585dba6ed4b55d510be8b26361b7f81bf1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB1F 11048 bytes
font_02_sfnt_off0000d033.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD033 4324 bytes

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