Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8c83f8e40d6c41a…

MALICIOUS

PDF

74.1 KB Created: 2020-08-30 19:13:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 29b4de672d4dc46fdb618e5701c5cd18 SHA-1: 1dfc775b4872d1f3f02850e54ba91afd572de5cb SHA-256: a8c83f8e40d6c41a06c7489bfd7645bc675c085b49c1319d0829f82fd2b37096
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link farm and a specific malicious redirector URL, indicating a phishing or scam attempt. The document body text, though partially garbled, mentions 'form schedule 1 - application for a temporary resident visa', reinforcing the lure. The primary malicious URL, https://ttraff.ru/wix?keyword=form+schedule+1+-+application+for+a+temporary+resident+visa+made+outside+canada, is identified as a malicious redirector, likely leading to further malicious content or a phishing site.

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.
  • 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.ru/wix?keyword=form+schedule+1+-+application+for+a+temporary+resident+visa+made+outside+canada
    • https://cdn.shopify.com/s/files/1/0438/5266/0901/files/certificat_de_cession_de_vehicule_gouv.pdf
    • https://cdn.shopify.com/s/files/1/0428/7738/6911/files/63897105007.pdf
    • https://cdn.shopify.com/s/files/1/0429/6884/2393/files/60214264729.pdf
    • https://cdn.shopify.com/s/files/1/0429/9823/5289/files/jabopevewufarusubitet.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zevimija.pdf
    • https://cdn.shopify.com/s/files/1/0430/2117/2897/files/navair_publications.pdf
    • https://cdn.shopify.com/s/files/1/0430/5662/7866/files/43948458982.pdf
    • https://cdn.shopify.com/s/files/1/0432/7351/9272/files/gutumi.pdf
    • https://static.usrfiles.com/ugd/3aca14_d1a3bce9c9d7454cb8ca83f35bf285ac.pdf
    • https://static.usrfiles.com/ugd/a467d2_feacacbe86c647c983be45e735f76061.pdf
    • https://static.usrfiles.com/ugd/c345b0_4e77a461f43e47e596569173cca161a3.pdf
    • https://static.usrfiles.com/ugd/269bb8_0eaf3623b6db47b29c0290af013966e3.pdf
    • https://static.usrfiles.com/ugd/8d57bd_a952a7a112b24f75badfd5ddd226d855.pdf
    • https://cdn.shopify.com/s/files/1/0433/1687/1336/files/59235504260.pdf
    • https://cdn.shopify.com/s/files/1/0427/7580/6119/files/speculation_tax_exemptions_form.pdf
    • https://cdn.shopify.com/s/files/1/0429/9508/9559/files/curso_alemao_basico.pdf
    • https://cdn.shopify.com/s/files/1/0463/0354/3453/files/together_with_ead_accountancy_class.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_off0000e1ff.bin
3170854e909b304b0219569ec800069499c8e746bd3cff26fde26f7c031e6f4b
pdf-font-stream PDF embedded font (sfnt) at offset 0xE1FF 5596 bytes
font_01_sfnt_off0000f4fa.bin
00743d5a33596bbde62e61d0222b4668941f259a570c8da2e8589e2c402db3c4
pdf-font-stream PDF embedded font (sfnt) at offset 0xF4FA 11036 bytes