Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b1c5a9d3fac291e…

MALICIOUS

PDF

39.8 KB Created: 2020-08-29 13:38:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: caa4031b8d81b190feff31da4e3f40ad SHA-1: 03a04358e31ac4c651899412e5c69a3b9d3e05a1 SHA-256: 0b1c5a9d3fac291e22c99618676d53fad3f2073e38be2e10bc524aabcbf263ce
162 Risk Score

Malware Insights

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

The PDF contains a link disguised as a download for 'Satisfya mp3 song download' which redirects to the malicious domain 'ttraff.com'. This domain is flagged as a known malicious redirector. The document also contains a large number of links to other PDFs, likely for SEO manipulation or to host further malicious content. No scripts were extracted, but the presence of malicious links and the ML classifier output strongly indicate a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.com/wix?keyword=satisfya+mp3+song+download+pagalworld
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0437/2489/8453/files/robirenogogotomuj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/depuwi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0507/4838/files/meborenorinasazife.pdf
    • https://cdn.shopify.com/s/files/1/0437/8699/3813/files/clash_of_clans_cheat_2019.pdf
    • https://static.usrfiles.com/ugd/b8c837_70300b25231c4d90b4d255ab2c11a50b.pdf
    • https://static.usrfiles.com/ugd/b8c837_2ec284379e554faf84c97e216abefd89.pdf
    • https://static.usrfiles.com/ugd/b8c837_cbf409ab0e0b4762ab2d206d2e61ac77.pdf
    • https://static.usrfiles.com/ugd/b8c837_7c396910b8a0431188896fb11b7b0258.pdf
    • https://static.usrfiles.com/ugd/b8c837_fda10cddaff840628864dae0117e75c7.pdf
    • https://static.usrfiles.com/ugd/b8c837_be201753f15b44ee8d9af8c090a31eb4.pdf
    • https://static.usrfiles.com/ugd/b8c837_c959401c0ceb4e5ebe8ae4b67ebb1093.pdf
    • https://static.usrfiles.com/ugd/8ab72e_02bf0564d1bd47fb8f90ab9344bd6afb.pdf
    • https://static.usrfiles.com/ugd/b8c837_d25c7ab58a8243cf896a62abec0d0184.pdf
    • https://static.usrfiles.com/ugd/b8c837_531bfd49a313432182eb865a40269856.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_off00005004.bin
1c53c29179d9e390745780177c15c9fd72f543fe51be9781bd32de3669c15b0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5004 5492 bytes
font_01_sfnt_off00006294.bin
0b74ce04d70cc1279f476b5d4e4c26ad3301f6dd92db1aeae89128a696dfdbc0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6294 9748 bytes
font_02_sfnt_off000083fb.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83FB 4324 bytes

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