Malicious PDF — malware analysis report

Static analysis result for SHA-256 93f9b17bb6a2acec…

MALICIOUS

PDF

40.2 KB Created: 2020-08-19 04:40:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72f2b2cec6f47cc900228c124ba35309 SHA-1: 7c358955fd0e1ae6e51b27dd5d7dee1aa16878e3 SHA-256: 93f9b17bb6a2acec0c4b9b9274554dd838230d2b519050c4e400a2587e31b12d
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs, many of which point to external PDF files hosted on Shopify. One URL, 'https://ttraff.ru/pify?keyword=maplestory+m+android+lag', is flagged as a known malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, suggesting a link farm or SEO manipulation tactic. The presence of the malicious redirector URL strongly suggests a malicious intent, likely to lead users to harmful content or phishing sites.

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=maplestory+m+android+lag
    • http://dosomos.custombuilddeckshamilton.com/uploads/1/3/1/3/131383790/liziketamifaliwofu.pdf
    • http://files.palmerhenley.com/uploads/1/3/1/3/131380158/jipolewapomodoj-joturikamomuwuk-retot-lakelizegatada.pdf
    • https://cdn.shopify.com/s/files/1/0429/7195/5351/files/varotulejafexifevod.pdf
    • https://cdn.shopify.com/s/files/1/0439/2163/7544/files/50316824194.pdf
    • https://cdn.shopify.com/s/files/1/0429/2512/9894/files/53979777469.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mekokagowofulagifofid.pdf
    • https://cdn.shopify.com/s/files/1/0430/1144/0803/files/68307017234.pdf
    • https://cdn.shopify.com/s/files/1/0433/4154/5626/files/59583504828.pdf
    • https://cdn.shopify.com/s/files/1/0433/8266/9461/files/magisterio_de_la_iglesia_catolica.pdf
    • https://cdn.shopify.com/s/files/1/0433/9171/3447/files/63005380357.pdf
    • https://cdn.shopify.com/s/files/1/0430/3729/4741/files/jilasaduvejugexadorafoda.pdf
    • https://cdn.shopify.com/s/files/1/0428/8937/9993/files/cvs_vs_git.pdf
    • https://cdn.shopify.com/s/files/1/0430/3663/9395/files/bible_study_guide_for_young_couples.pdf
    • https://cdn.shopify.com/s/files/1/0428/3393/6547/files/14481051742.pdf
    • https://cdn.shopify.com/s/files/1/0438/4024/1829/files/best_ps3_games_of_2013.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_off00005ffa.bin
9dbf636ddfa3946f03e65dc5023a4e7dfc54bc2408715383a0920e63c35b97b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FFA 5384 bytes
font_01_sfnt_off0000723d.bin
f821f764e1c76173344ce8564676dd9a9db63e8eb9bf8446c2ece995371fe6ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x723D 9844 bytes

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