Malicious PDF — malware analysis report

Static analysis result for SHA-256 58c3045ff0e9fe57…

MALICIOUS

PDF

39.7 KB Created: 2020-08-31 00:55:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9dd92824a236744f4f47bade6d301f50 SHA-1: c47a0d79868752255e6a9821d45c7f86e7c28ab0 SHA-256: 58c3045ff0e9fe571faa06fa324ba24dcb80bb2447fd56b1f966f9a6d6fcd3b9
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link to a known malicious redirector, ttraff.ru, which is likely used to direct users to malicious content. The document body, though heavily obfuscated, contains the same URL and appears to be a lure related to song lyrics. The presence of numerous other benign-looking PDF links suggests a link farm or SEO poisoning attempt to mask the malicious URL.

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.ru/wix?keyword=ungu+cinta+dalam+hati+lirik
    • https://cdn.shopify.com/s/files/1/0438/1065/2317/files/solidworks_drawing_sheet_metal.pdf
    • https://cdn.shopify.com/s/files/1/0464/5807/7352/files/managerial_accounting_journal.pdf
    • https://cdn.shopify.com/s/files/1/0436/5726/5305/files/xowapokebulosogetakigo.pdf
    • https://static.usrfiles.com/ugd/0049ca_d3307c15c2ef4ae0b51ae2b4ba976c36.pdf
    • https://static.usrfiles.com/ugd/1f2646_d46b4834b5b64fb1b163ec40e01381aa.pdf
    • https://static.usrfiles.com/ugd/b8c837_8c369762975a41ddad84b8131cc23851.pdf
    • https://static.usrfiles.com/ugd/0aab01_94b9a559f2424debb7e05d4b7c20ba66.pdf
    • https://static.usrfiles.com/ugd/0aab01_d57d3d47edd3476dbfc5dbdfe1a231c6.pdf
    • https://static.usrfiles.com/ugd/f09a9d_8619637955cb4e4a83de8eb1e20c8382.pdf
    • https://static.usrfiles.com/ugd/b8c837_3f497ba781d34cb5a5cacf40d1b91d67.pdf
    • https://static.usrfiles.com/ugd/6f7357_f44e081ffbd44e9c8e24a9af9bd5fe98.pdf
    • https://static.usrfiles.com/ugd/47b1e8_2866ff44007a489ea1574130db2f2876.pdf
    • https://static.usrfiles.com/ugd/764aaa_de311f45f03447bd9c8d60f69efd5ba6.pdf
    • https://cdn.shopify.com/s/files/1/0428/9839/1196/files/gasumititafarevotiwut.pdf
    • https://cdn.shopify.com/s/files/1/0434/7982/6589/files/fourier_series_examples_and_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0430/3549/2503/files/filax.pdf
    • https://cdn.shopify.com/s/files/1/0438/2870/7485/files/defewogarafuvude.pdf
    • https://cdn.shopify.com/s/files/1/0434/7897/4616/files/25340875869.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000051ab.bin
2802ff095012e2c7b5681550f3fafba233ae8625503c0e14356952e1da8cc53d
pdf-font-stream PDF embedded font (sfnt) at offset 0x51AB 4884 bytes
font_01_sfnt_off00006203.bin
39f89fc49ab4ee22c0b3340c2b7b3b4fd4e379a70e365497b4b2ca547af915f0
pdf-font-stream PDF embedded font (sfnt) at offset 0x6203 9912 bytes
font_02_sfnt_off000083cb.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x83CB 4324 bytes