Malicious PDF — malware analysis report

Static analysis result for SHA-256 9273cf4a07822db0…

MALICIOUS

PDF

42.5 KB Created: 2020-08-24 22:17:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d1e63c8d7d3c1e1c4ed316610f5881c SHA-1: 051eb0ea0860a72100b2f403701f2f3607d8eb3b SHA-256: 9273cf4a07822db0b1ce8a7a1769703f3de9c81a48f433a946692bc23e5cd875
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector, 'https://ttraff.cc/pify?keyword=academic+performance+of+high+school+student+athletes'. Another heuristic flagged the document as a link farm, with numerous links to Shopify domains, likely intended to obscure the malicious redirector. The presence of these elements strongly suggests an attack pattern focused on luring users to malicious sites.

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.cc/pify?keyword=academic+performance+of+high+school+student+athletes
    • http://pekow.iancarlsen.com/uploads/1/3/1/4/131453114/d7482f.pdf
    • http://files.watervillefederated.com/uploads/1/3/1/3/131379321/3117809.pdf
    • http://nemef.lesacacias.org/uploads/1/3/2/3/132302780/lezemokixugi-zivozekigorozur-rebajebi.pdf
    • https://cdn.shopify.com/s/files/1/0434/4361/7958/files/lipid_profile_guidelines_2017.pdf
    • https://cdn.shopify.com/s/files/1/0439/7416/4638/files/30576412624.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dadimutixiwukigojubiw.pdf
    • https://cdn.shopify.com/s/files/1/0430/6763/7917/files/absa_bursary_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0434/5276/0224/files/wusadamereditagig.pdf
    • https://cdn.shopify.com/s/files/1/0433/2525/9944/files/68263268360.pdf
    • https://cdn.shopify.com/s/files/1/0429/5104/9370/files/86651556571.pdf
    • https://cdn.shopify.com/s/files/1/0438/5875/5749/files/configurare_mail_aruba_su_outlook_android.pdf
    • https://cdn.shopify.com/s/files/1/0432/3350/9535/files/tezonivozimo.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_off000068cf.bin
9360703614071dc41aa2416ba6bf85c4b65856bad5204672705a97b6561f14c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68CF 5556 bytes
font_01_sfnt_off00007b84.bin
9eb7e470f9105f196c20b615026b4ab43eb8ae64a4a33c9a50517376ad8e2159		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B84 9824 bytes

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