Malicious PDF — malware analysis report

Static analysis result for SHA-256 a25449139eeceeb2…

MALICIOUS

PDF

42.1 KB Created: 2020-09-05 08:04:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4de407648d645a6dd1e28deb2dcf5637 SHA-1: 545fe12508fff9d44cb36d674a566ac09eb9c48d SHA-256: a25449139eeceeb23eeb09ca413ef77aa17a819c5e5048807cdce457da9b3cb1
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body, though partially corrupted, contains text suggesting it is impersonating an 'Hermitage academy ofsted report'. The primary malicious URL identified is https://ttraff.club/wix?keyword=hermitage+academy+ofsted+report, which is likely used to redirect the user to a malicious site or download further payloads. The presence of a link farm further supports the malicious intent.

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.club/wix?keyword=hermitage+academy+ofsted+report
    • https://cdn.shopify.com/s/files/1/0451/8179/6503/files/cant_stop_wont_stop_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/0843/4077/files/62798127355.pdf
    • https://cdn.shopify.com/s/files/1/0435/3576/1576/files/b_form_course_in_coimbatore.pdf
    • https://static.usrfiles.com/ugd/48d9a1_cb90a5baaf7c4d69af9df06e04ff113a.pdf
    • https://cdn.shopify.com/s/files/1/0434/3123/1655/files/amsco_apush_chapter_13.pdf
    • https://cdn.shopify.com/s/files/1/0431/5109/8007/files/hp_laserjet_1018_driver.pdf
    • https://cdn.shopify.com/s/files/1/0433/9105/8070/files/rowerivazaxidoxu.pdf
    • https://cdn.shopify.com/s/files/1/0430/1750/2869/files/79535485703.pdf
    • https://cdn.shopify.com/s/files/1/0428/7175/0823/files/tefiwidobulikifugatoji.pdf
    • https://cdn.shopify.com/s/files/1/0431/0574/7108/files/26033538849.pdf
    • https://cdn.shopify.com/s/files/1/0429/6579/4965/files/mastering_metrics_the_path_from_cause_to_effect_download.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_off000065d9.bin
3310e5290b411576f60770448bb239bb0b58713be0808a2bab7af4e26adbab8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65D9 5508 bytes
font_01_sfnt_off00007887.bin
d2a3e8c9f70803f644bd341c1afba42d67333e01bf0de0e89ef4d09b9c71b175		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7887 10464 bytes

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