Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbdcc752960ceebd…

MALICIOUS

PDF

41.9 KB Created: 2020-08-23 20:00:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 772172f810fa0dfe968300a921938c5d SHA-1: 3b58fb7d57939f1e42d449daae1e45af6ca0c96e SHA-256: cbdcc752960ceebd5e617441ca30ecf931e39d2bc94d52e3ecedc3966d7ce463
136 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector at 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to judgments and credit reports, combined with urgency language, suggesting a phishing or scam attempt. The presence of numerous PDF links hosted on cdn.shopify.com indicates a link farm designed to improve search engine ranking for malicious content.

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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.cc/pify?keyword=judgments+stay+on+credit+report
    • http://nixex.koreanucc.org/uploads/1/3/1/4/131407668/lilekovowavifobij.pdf
    • http://files.morningstar-arts.com/uploads/1/3/1/4/131437018/a32dfb0f38f792.pdf
    • http://files.myjcloveonline.com/uploads/1/3/1/3/131380094/kipusej_legalokipe_weverurogaz_xetaruv.pdf
    • http://tegopem.grangerlandrfd.com/uploads/1/3/2/7/132741100/43a2b5bff.pdf
    • https://cdn.shopify.com/s/files/1/0437/6634/9975/files/journal_le_soir_d_algrie_en.pdf
    • https://cdn.shopify.com/s/files/1/0429/5308/0991/files/wuvigewidifafogige.pdf
    • https://cdn.shopify.com/s/files/1/0433/9951/2231/files/93171152762.pdf
    • https://cdn.shopify.com/s/files/1/0432/0729/5140/files/nabopodezam.pdf
    • https://cdn.shopify.com/s/files/1/0440/4586/1014/files/anemia_ferropenica_signos_y_sintomas.pdf
    • https://cdn.shopify.com/s/files/1/0434/4568/2332/files/5225563119.pdf
    • https://cdn.shopify.com/s/files/1/0438/9021/3019/files/jafixekamidelugir.pdf
    • https://cdn.shopify.com/s/files/1/0430/0079/1193/files/the_economist_2020_cover.pdf
    • https://cdn.shopify.com/s/files/1/0427/6181/4172/files/belekeribonug.pdf
    • https://cdn.shopify.com/s/files/1/0428/5690/6918/files/6957606606.pdf
    • https://cdn.shopify.com/s/files/1/0439/3258/2056/files/pofisiwexetarorezer.pdf
    • https://cdn.shopify.com/s/files/1/0433/7870/4536/files/99940701068.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000058ea.bin
545a23186280c3bc517e9b49e2a0c24669af916bcbae5682c011f7f7492c57bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58EA 5336 bytes
font_01_sfnt_off00006af5.bin
d1e10996336539132ceeb0c5d533c72598f604e0a9e55abfac0034313d9260f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF5 9820 bytes
font_02_sfnt_off00008c9f.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C9F 4324 bytes

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