Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee5e1a14ef35bc9c…

MALICIOUS

PDF

80.3 KB Created: 2020-08-20 09:33:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b6e5a649c62b61e9728b9a940f4b174f SHA-1: 28caa3426cbb3f0966bc1836942d49872ec47dff SHA-256: ee5e1a14ef35bc9c4f78f5ffdaae69831c775d0b06e0810c7028061410eea193
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The embedded document body text, though heavily obfuscated, contains URLs that are consistent with these findings. The primary malicious URL identified is https://ttraff.ru/pify?keyword=circle+of+life+choir+pdf, which is likely used to redirect users to malicious content. The presence of numerous other links, many pointing to Shopify domains, suggests a tactic to obscure the true malicious destination or to leverage seemingly benign platforms for distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=circle+of+life+choir+pdf
    • http://files.thequeenofstaves.com/uploads/1/3/0/8/130814636/cdaa322.pdf
    • http://files.leemschoir.com/uploads/1/3/1/4/131407547/1954364.pdf
    • http://sinedawe.kahua-ranch.com/uploads/1/3/1/0/131071243/8715333.pdf
    • http://totijozam.steppingstoneschildrencenter.com/uploads/1/3/0/7/130775448/8a1e6b.pdf
    • https://cdn.shopify.com/s/files/1/0431/4152/9754/files/62261523204.pdf
    • https://cdn.shopify.com/s/files/1/0434/4256/9383/files/autismo_leve_en_nios.pdf
    • https://cdn.shopify.com/s/files/1/0432/0637/7633/files/bloom_s_taxonomy_poster.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dusegu.pdf
    • https://cdn.shopify.com/s/files/1/0435/3359/8880/files/photoshop_actions_free_photo_editing.pdf
    • https://cdn.shopify.com/s/files/1/0432/5916/6888/files/ludovico_einaudi_ancora_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0429/3810/6023/files/no_excuses_brian_tracy_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/4463/3750/files/64291377373.pdf
    • https://cdn.shopify.com/s/files/1/0431/9982/4032/files/94386835568.pdf
    • https://cdn.shopify.com/s/files/1/0431/7839/3762/files/crackheads_fighting_over_crack.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 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008618.bin
c7dd2dd0a9d020a92b449874016f8f65b5b13927c6ebe9704284aa96a5edaf28		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8618 10060 bytes
font_01_sfnt_off0000a7d2.bin
e55151459f5bbe45a86134f80e54aee118570b0b14dc7b4233c27afdbbc16bd6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA7D2 4760 bytes
font_02_sfnt_off0000b7ec.bin
3a70556802866d831ed2844b0ac1fd7f2fcb8ff8222298bf802dc85127815d8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB7EC 3988 bytes
font_03_sfnt_off0000c767.bin
d894f8df04570cfeabc6d818b4466eb17b7530f5013348e21ddd6784b962b828		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC767 8500 bytes
font_04_sfnt_off0000def3.bin
f9f410fd09d333293a4f61ca9c7f916dcb12257364c68647d2ff3ac87e571816		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDEF3 13424 bytes
font_05_sfnt_off00010b3b.bin
fae3fe0eafbe05fa2017d666d24e224e636ba9c07fc956c2e2ddf887308267a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B3B 17716 bytes
font_06_sfnt_off0001262a.bin
128a21af122428e3cc378b3992a902a2d32e61c67402155c6c370293fe211782		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1262A 3244 bytes

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