Malicious PDF — malware analysis report

Static analysis result for SHA-256 14b919fe8e721a37…

MALICIOUS

PDF

62.7 KB Created: 2020-08-31 08:22:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0867441475b8202bbae8b0d349330c84 SHA-1: c66fbc5983eff909bec4590e625bfc322084becd SHA-256: 14b919fe8e721a3779b19d02ac41b63a1681ca9cfb2c3b7c4de29a3c57c3ba7b
194 Risk Score

Malware Insights

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

The sample is a PDF document identified as malicious by a machine learning classifier and heuristic rules. It contains a link farm and a specific URL, 'https://ttraff.cc/wix?keyword=eternal+champions+move+list', which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text fragments and URLs consistent with an advance-fee scam lure, aiming to trick users into clicking malicious links.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=eternal+champions+move+list
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/cc15ef_43fa0d0f067643578d91979c7cf308dc.pdf
    • https://static.usrfiles.com/ugd/10e3af_e8d7cf6f9894430e8c897c1904e93cdc.pdf
    • https://static.usrfiles.com/ugd/0aab01_721de51edae04885bd09ea5e3f5262f6.pdf
    • https://static.usrfiles.com/ugd/4cf28d_20efc284b7cb4e5e94ea4289abb4fde0.pdf
    • https://static.usrfiles.com/ugd/b8c837_f8f0a6fa93dd4babb76a95e8490c82dd.pdf
    • https://static.usrfiles.com/ugd/6d59ab_4632ab27b78443feb97a9f733c59343d.pdf
    • https://static.usrfiles.com/ugd/3f80ec_a3f8cab66a714fe0b93e1dbb638aa5bb.pdf
    • https://static.usrfiles.com/ugd/f80014_841fdbde45134b83a4d5a0252a9e91cf.pdf
    • https://static.usrfiles.com/ugd/5af86b_e6047b23abb743a3ae696c60ad5113d4.pdf
    • https://cdn.shopify.com/s/files/1/0433/3928/4645/files/rudetarupegekukaxidetesov.pdf
    • https://cdn.shopify.com/s/files/1/0431/4388/9052/files/72560873018.pdf
    • https://static.usrfiles.com/ugd/b8c837_f75bd20688a340b8bd166cdcea3d0ce6.pdf
    • https://static.usrfiles.com/ugd/b8c837_53a242ddfb664530a6fc47c840efeb9d.pdf
    • https://static.usrfiles.com/ugd/b8c837_91635c86d5cd41d8b0cf3c14c4ea56cb.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000865c.bin
c25def79da501f2f0e280be1adc7b021d8339b4ab25687383472bcc9fc0687ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x865C 4836 bytes
font_01_sfnt_off00009740.bin
038e8911272078f8d51e187a212e93e69c73dda9d883415ce405834bdccc748f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9740 5188 bytes
font_02_sfnt_off0000a8b7.bin
2ba2e98a12ca0a42bb7a53159fe47a6143e9afb846b1cf3c9878ffea823048f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA8B7 15004 bytes
font_03_sfnt_off0000d81c.bin
764fe263e68fd20aff2bbd96e69f5a400d440299d02096befa162391f913c7cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD81C 16144 bytes

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