Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaa7a2dd6f70c7a3…

MALICIOUS

PDF

49.9 KB Created: 2020-08-16 16:22:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8008f14ac3ff181a2e47ef3ee98ff4a6 SHA-1: b2d28c597972718c73f20e17de689d0fa37d8f05 SHA-256: eaa7a2dd6f70c7a3e7ae078461f2e08bb2a04736e9fabf4fe45537504b03120f
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 ttraff.com. Additionally, it exhibits a PDF link farm, with many links pointing to Shopify domains, likely for SEO manipulation or to obscure the malicious redirect. The presence of a 'download button' lure further supports a social engineering attack. No scripts were extracted, but the primary malicious activity appears to be redirecting the user to a harmful 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.
  • 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.com/pify?keyword=countifs+function+in+excel+with+multiple+sheets
    • http://xokavaj.michael-hernandez.net/uploads/1/3/0/7/130776394/4366384.pdf
    • http://files.billcordova.com/uploads/1/3/0/8/130874086/934206.pdf
    • http://files.nphsjrwolfpack.com/uploads/1/3/1/4/131483253/pageponiputi_gosalobire_vopepas_fatibo.pdf
    • http://files.sjdalby.com/uploads/1/3/0/7/130776828/vepanisizizu_toxaviwutaziwu_xevunaw_pugukiwufejepa.pdf
    • http://files.susanwardbooks.com/uploads/1/3/1/6/131606670/fbfbbaf46c4.pdf
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/medical_billing_ar_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mefiwi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0697/5382/files/bypass_frp_apk_rootjunky.pdf
    • https://cdn.shopify.com/s/files/1/0432/1493/0084/files/mugen_character_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/3413/2131/files/portuguese_to_english.pdf
    • https://cdn.shopify.com/s/files/1/0428/8079/4780/files/elastic_and_inelastic_collision.pdf
    • https://cdn.shopify.com/s/files/1/0437/1388/8405/files/beowulf_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/piramide_alimenticia_actual.pdf
    • https://cdn.shopify.com/s/files/1/0435/5971/4971/files/50319314755.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_off00007b59.bin
eb6aa18aab3819075f0892cd89c597dda26f2cc4cb2b06319cbca39cb52bff4d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B59 5016 bytes
font_01_sfnt_off00008c5e.bin
ba992db102d8cf2be59b64978d1dc1159b4f8bd1a95f6f0d2e7f6c3f89de013d
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C5E 14708 bytes