Malicious PDF — malware analysis report

Static analysis result for SHA-256 63929ded7090f36c…

MALICIOUS

PDF

56.2 KB Created: 2020-09-07 02:58:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 987a6a41823bf01ac2933ff3e466c217 SHA-1: 1fdbe086b193cca0582a1532ad1fde4c7d857005 SHA-256: 63929ded7090f36cfba393e69ed1ae97ee690c24267cc246ce83f885209462bf
154 Risk Score

Malware Insights

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

The PDF contains embedded links and text that direct users to a malicious redirector URL, disguised as a lure for a 'beauty camera editor apk'. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the malicious nature of the target infrastructure. The PDF also contains a large number of other links, suggesting a link farm or SEO poisoning attempt to drive traffic to potentially malicious sites.

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.me/wix?keyword=beauty+camera+editor+apk
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/a6e5e9_7f7a8578c692409e96dd8be53e7ff3ae.pdf
    • https://static.usrfiles.com/ugd/140efa_3af586807e8846918617b55807cc79a4.pdf
    • https://static.usrfiles.com/ugd/804ff6_e7adabfaf5094dcf9ad9a4dbe9838182.pdf
    • https://static.usrfiles.com/ugd/b16523_030b6d3577fd434094950441061662ce.pdf
    • https://cdn.shopify.com/s/files/1/0430/6151/0293/files/happy_gilmore_online_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/9933/2516/files/98473787456.pdf
    • https://cdn.shopify.com/s/files/1/0428/8312/1319/files/54952945512.pdf
    • https://cdn.shopify.com/s/files/1/0448/5169/1681/files/capital_markets_basics.pdf
    • https://cdn.shopify.com/s/files/1/0463/1756/8157/files/how_to_generate_aggregate_report_in_jmeter.pdf
    • https://cdn.shopify.com/s/files/1/0430/8333/3785/files/mitofud.pdf
    • https://cdn.shopify.com/s/files/1/0432/3095/3630/files/67821708817.pdf
    • https://cdn.shopify.com/s/files/1/0433/3685/9813/files/osteoporosis_journal.pdf
    • https://cdn.shopify.com/s/files/1/0428/6418/1404/files/zapabekida.pdf
    • https://cdn.shopify.com/s/files/1/0427/6987/5111/files/wisuwasekogubotifiw.pdf
    • https://cdn.shopify.com/s/files/1/0428/0002/1667/files/vusadiwosol.pdf
    • https://cdn.shopify.com/s/files/1/0429/6966/1589/files/bimosum.pdf
    • https://cdn.shopify.com/s/files/1/0462/7690/3072/files/tizulur.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_off000068e8.bin
daf103639b27fbafa67884c1e042b9247323431b46fa8219826374a31d9e68cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68E8 5224 bytes
font_01_sfnt_off00007aa1.bin
3c84aabee067d349e44935bb26abbe0e0ea059f547a3242c529ab9e1c9be5797		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AA1 9572 bytes
font_02_sfnt_off0000992b.bin
eca78f62420f0bd4de2f822e290029a2fd89c52a2e04ed270548c43cba618b22		 pdf-font-stream PDF embedded font (sfnt) at offset 0x992B 10072 bytes
font_03_sfnt_off0000bbdf.bin
d5d4d4a41cd6171ad330832f19c26fb881e3acfc22b494ad81a8419edf6c0668		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBBDF 16868 bytes

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