Malicious PDF — malware analysis report

Static analysis result for SHA-256 069a784173d18f4a…

MALICIOUS

PDF

57.6 KB Created: 2020-09-07 17:56:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d2e7edc9221c01fc3f1c44436dae2755 SHA-1: 826a036588face0bd8ead00f49b821dc6fcd429b SHA-256: 069a784173d18f4a48029542f4b4cc2a05430ae7476e931ee73ecd33dee595f0
154 Risk Score

Malware Insights

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

The PDF contains numerous links, including one identified as a malicious redirector, disguised with a game-related keyword. The ML classifier strongly indicated maliciousness, and the presence of a link farm suggests a tactic to manipulate search engine results or distribute malicious content. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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.link/pify?keyword=summoners+war+dragon+b10+team+guide
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static.usrfiles.com/ugd/50de67_75041c30d206492c82e190d7b6a41393.pdf
    • https://static.usrfiles.com/ugd/917232_56f3ee8c926544f6bdaf2d60ee953799.pdf
    • https://static.usrfiles.com/ugd/b4a829_6e218da6f71d493c8a7a1beab6f786eb.pdf
    • https://cdn.shopify.com/s/files/1/0433/7316/6744/files/29938053831.pdf
    • https://cdn.shopify.com/s/files/1/0463/0845/8661/files/turukuguw.pdf
    • https://static.usrfiles.com/ugd/b8c837_ba744cf5df714130843786c3f18a01d9.pdf
    • https://static.usrfiles.com/ugd/cc1a03_70c2281125bb4ccb850a2f7faa9f4c4a.pdf
    • https://static.usrfiles.com/ugd/d5d855_99ec67ce0ad74c2c8d22019d1745a2ad.pdf
    • https://static.usrfiles.com/ugd/e8dba5_9dd7f32ecf12426a97d6c4ce5b3e4bec.pdf
    • https://static.usrfiles.com/ugd/3f80ec_a992f7cdba8644a19d443126ce348e7f.pdf
    • https://static.usrfiles.com/ugd/07625c_9e983b77737046bcadfea1f5309138cf.pdf
    • https://static.usrfiles.com/ugd/3bf302_26ff1ba3900649b99b65aeb31e8ee949.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_off00007ef9.bin
535e57ad411ff835446788cc73f4c64c0e25bc03b7c7b97a129ebf4886a0be35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EF9 5524 bytes
font_01_sfnt_off000091ab.bin
9eacc17435e56d1aa014af5f711d7dde6060315285edd40de9af486f68310e1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91AB 10852 bytes
font_02_sfnt_off0000b5f1.bin
ee51351c9eb8c6a9dbff1bb743467f39bbaa64eee970481c040e8f02c1ffc4b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB5F1 16340 bytes
font_03_sfnt_off0000cb69.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCB69 4324 bytes

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