Malicious PDF — malware analysis report

Static analysis result for SHA-256 e38acfad3c847971…

MALICIOUS

PDF

45.6 KB Created: 2020-08-19 06:30:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e70747e46aefaf803c2363f3ec464561 SHA-1: fbad7f7078fa2316b0fb492a5ad2ed98aa4c3b93 SHA-256: e38acfad3c84797192d855e6e8749a80c000c3231c0b2481e5eb96e295ece8e1
130 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 link pointing to a known malicious redirector. The document body text, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=system+test+plan+template', which is identified as a malicious redirector. This suggests the document's primary purpose is to lure users into clicking malicious links, likely leading to further malware downloads or phishing attempts.

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=system+test+plan+template
    • http://files.thewheelcaravanpark.co.uk/uploads/1/3/1/0/131070192/tujuwunote.pdf
    • http://files.prbynautisteph.com/uploads/1/3/0/7/130739810/katuxanoxaza.pdf
    • http://dorig.dablonde.com/uploads/1/3/0/7/130739275/govalulitelawa-vafegu-tasomixazili.pdf
    • http://joxotiruw.covoc.ie/uploads/1/3/0/7/130738779/a032c89.pdf
    • https://cdn.shopify.com/s/files/1/0435/3094/4671/files/95927199480.pdf
    • https://cdn.shopify.com/s/files/1/0437/4292/0869/files/present_tense_past_tense_future_tense_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0431/9825/1170/files/xutewevejulutajapusifel.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/4155504299.pdf
    • https://cdn.shopify.com/s/files/1/0431/9707/1524/files/25085308451.pdf
    • https://cdn.shopify.com/s/files/1/0439/3952/8872/files/wow_3._3._5_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/4584/6168/files/zubelobuves.pdf
    • https://cdn.shopify.com/s/files/1/0427/4244/8295/files/jitiwazowasosobusol.pdf
    • https://cdn.shopify.com/s/files/1/0434/6681/7696/files/fuluzutubufemol.pdf
    • https://cdn.shopify.com/s/files/1/0429/2735/8115/files/vuvuvikilatumamejojotire.pdf
    • https://cdn.shopify.com/s/files/1/0428/9894/8255/files/sevikojumawuvezuxiju.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_off0000765c.bin
9c74400a74cb37a8e8d7e0fbccf23e69a104beb22bd23e462a89be5e5c41c1bc
pdf-font-stream PDF embedded font (sfnt) at offset 0x765C 5076 bytes
font_01_sfnt_off0000878e.bin
9f4b24733747695e007d207db107f66344d89f5714a802bd0db1819c77e8f041
pdf-font-stream PDF embedded font (sfnt) at offset 0x878E 10052 bytes