Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cd592452575b3c8…

MALICIOUS

PDF

42.3 KB Created: 2020-08-14 17:02:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9df4b2b36a64714aadc348a5679a3ea1 SHA-1: 6593bae07260627d363c6b89407c90eb774feb21 SHA-256: 9cd592452575b3c832706d66bca7c92538db32adae1cb00aa9140db88d3a9b21
140 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=accident+reports+charlotte+nc'. Additionally, it exhibits a PDF link farm pattern, with numerous links to external PDFs, some hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL. The presence of a callback lure heuristic suggests a potential for social engineering, possibly leading to a tech-support scam or phishing attempt.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=accident+reports+charlotte+nc
    • http://files.insurancenewsmyrna.com/uploads/1/3/1/1/131164295/fugelakexifar-gisonorupodupiw.pdf
    • http://files.myersac.com/uploads/1/3/1/4/131453896/mebupedexor_vufakigag.pdf
    • http://files.regenpreneur.com/uploads/1/3/1/4/131482930/tugewoliti.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8179/files/bangladesh_upazila_map.pdf
    • https://cdn.shopify.com/s/files/1/0435/4703/3752/files/telebonamazutoxorukogera.pdf
    • https://cdn.shopify.com/s/files/1/0435/4146/3204/files/cursuri_antreprenoriat.pdf
    • https://cdn.shopify.com/s/files/1/0430/1042/4993/files/85523839613.pdf
    • https://cdn.shopify.com/s/files/1/0436/6820/9814/files/anfotericina_b_bula.pdf
    • https://cdn.shopify.com/s/files/1/0435/2920/7957/files/kapuligizefawarawaz.pdf
    • https://cdn.shopify.com/s/files/1/0429/3846/6460/files/zuveteguxosuriku.pdf
    • https://cdn.shopify.com/s/files/1/0431/0627/1394/files/recommendation_letter_template_for_scholarship.pdf
    • https://cdn.shopify.com/s/files/1/0436/1807/4786/files/15177342407.pdf
    • https://cdn.shopify.com/s/files/1/0433/6009/2309/files/rizuwuxawesifewizi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/demotufilonameviv.pdf
    • https://cdn.shopify.com/s/files/1/0433/7745/9363/files/zikaj.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_off00006744.bin
33767df67dda70427d882c164c4263be6a501890be9b2f7daca18325d81b6341
pdf-font-stream PDF embedded font (sfnt) at offset 0x6744 5152 bytes
font_01_sfnt_off000078b0.bin
69ccaec74c0069e47a490a466d3b6835a630d93a8bc4b5ca7ba135e0be007da8
pdf-font-stream PDF embedded font (sfnt) at offset 0x78B0 10400 bytes