Malicious PDF — malware analysis report

Static analysis result for SHA-256 45ac1630ff182cd1…

MALICIOUS

PDF

81.8 KB Created: 2020-09-07 10:45:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a7b4c3b65430fc595de03f691f9a92e SHA-1: 13466a1dc01f99471141629a8474798baaa7a40a SHA-256: 45ac1630ff182cd1dd5af178d456cffe63bca351aa353d5634e46d6a5aaddc39
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the string 'https://ttraff.ru/pify?keyword=google+map+api+json+format', suggesting a lure to a malicious site. The presence of a link farm heuristic further indicates an attempt to distribute malicious content or manipulate search rankings.

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/pify?keyword=google+map+api+json+format
    • https://static.usrfiles.com/ugd/b4bf80_64d99f9c67a9408b84c7f4ffdd47fe8e.pdf
    • https://static.usrfiles.com/ugd/b30cf0_c1db4c943ee6450cbb52551b31b84c56.pdf
    • https://static.usrfiles.com/ugd/4bb894_98249313552e4815829b33eae4427bfb.pdf
    • https://cdn.shopify.com/s/files/1/0432/7541/9798/files/dujug.pdf
    • https://cdn.shopify.com/s/files/1/0429/4171/0499/files/lujuvuzeme.pdf
    • https://static.usrfiles.com/ugd/c81504_4fd117c8b33a4a5c9e03961a0ddc872c.pdf
    • https://static.usrfiles.com/ugd/733c1f_a69a809414d1421298a98927b9f147e0.pdf
    • https://static.usrfiles.com/ugd/83b1b3_c50f1dd22c8f40c495cacbb3db2371fa.pdf
    • https://cdn.shopify.com/s/files/1/0458/5432/6937/files/assonance_and_alliteration_are_different_types_of.pdf
    • https://cdn.shopify.com/s/files/1/0435/5896/1320/files/98936879388.pdf
    • https://cdn.shopify.com/s/files/1/0464/5771/6904/files/english_font_like_arabic_free.pdf
    • https://cdn.shopify.com/s/files/1/0436/4474/7929/files/guitar_building_templates.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f41e.bin
aa98db2fd4cb1528f1fb367253b8ab826e0ba7326cfee37f33f8061137cd315c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF41E 5328 bytes
font_01_sfnt_off00010631.bin
b182685f7906be64de8debf26337327efed926b727738101c815d24c868eb780		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10631 16836 bytes

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