Malicious PDF — malware analysis report

Static analysis result for SHA-256 8318bbdb217dc75c…

MALICIOUS

PDF

41.2 KB Created: 2020-08-10 17:27:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8270d8258db338adc9e140dfaaab631e SHA-1: e6b059537157eff6cd62806fe9c329cb765289b7 SHA-256: 8318bbdb217dc75c7aa8e08f1c258e452de6a8322fae21c4ca83dacd5bbda253
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=kambikuttan+pdf+cartoon+download'. Additionally, it exhibits a PDF link farm heuristic, with numerous links, many hosted on cdn.shopify.com, suggesting an attempt to distribute content or lure users. The presence of a 'download button' heuristic further supports a lure-based attack. No scripts were extracted, but the combination of a malicious redirector and a link farm strongly indicates a phishing or malware distribution attempt.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=kambikuttan+pdf+cartoon+download
    • http://nodat.yvettewalkerwriter.com/uploads/1/3/1/6/131637814/61f20b54619.pdf
    • http://meriwu.getpatenthelp.com/uploads/1/3/1/3/131379732/lemataleburor.pdf
    • http://files.erskinebadmintonclub.co.uk/uploads/1/3/2/7/132740511/ralibikik_polof_telubevizabop_borumisofekutav.pdf
    • https://cdn.shopify.com/s/files/1/0437/0936/6427/files/bikamit.pdf
    • https://cdn.shopify.com/s/files/1/0449/2584/5659/files/sony_cdp-_cx355_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/6067/4198/files/pezujogutumopewafiwogodor.pdf
    • https://cdn.shopify.com/s/files/1/0432/9730/8840/files/84025884111.pdf
    • https://cdn.shopify.com/s/files/1/0432/0906/4607/files/essential_oils_list_and_benefits.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/46456123156.pdf
    • https://cdn.shopify.com/s/files/1/0428/5172/9574/files/vewozi.pdf
    • https://cdn.shopify.com/s/files/1/0439/0499/1400/files/security_guard_training_manual_south_africa.pdf
    • https://cdn.shopify.com/s/files/1/0430/3329/7058/files/pituxakovedeboze.pdf
    • https://cdn.shopify.com/s/files/1/0430/3192/0794/files/taller_trinomio_cuadrado_perfecto.pdf
    • https://cdn.shopify.com/s/files/1/0430/8631/5684/files/april_calendar_printable.pdf
    • https://cdn.shopify.com/s/files/1/0433/0301/0459/files/87775694224.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_off00005229.bin
6a25b962ffab943e3d297f48bd09eeeb0e78bbf7a5ee60b4f16171b934871807
pdf-font-stream PDF embedded font (sfnt) at offset 0x5229 5388 bytes
font_01_sfnt_off0000646a.bin
686a912565ff7eef0d4de053f50bb58bce1272db86334d7a348892a44eee9338
pdf-font-stream PDF embedded font (sfnt) at offset 0x646A 4176 bytes
font_02_sfnt_off0000740b.bin
511d8a8256c391144e796507b427cf1f7145bbf293a237eefd984d41da5c0ef6
pdf-font-stream PDF embedded font (sfnt) at offset 0x740B 10348 bytes