Malicious PDF — malware analysis report

Static analysis result for SHA-256 edc436088ee550b9…

MALICIOUS

PDF

46.4 KB Created: 2020-09-17 04:23:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01d5a41d47bdd818161acf60efd671a7 SHA-1: 5432034f9271cc694e666deb57c1405389db454c SHA-256: edc436088ee550b930e2b9d624b32749ee8df67c10ae898b869704e21112a17e
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, indicating a link farm. The primary malicious URL identified is ttraff.cc, which is known for redirecting to malicious content. The document body, though heavily obfuscated, contains this URL and other Shopify URLs, suggesting a lure to download further malicious content or engage in phishing. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=little+blue+and+little+yellow+by+leo+lionni+pdf
    • https://cdn.shopify.com/s/files/1/0437/8309/4434/files/zowuwegomurebegerewutaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/6997/2392/files/towuwavezimekededeju.pdf
    • https://cdn.shopify.com/s/files/1/0428/1935/4791/files/febobomefefuju.pdf
    • https://cdn.shopify.com/s/files/1/0459/9562/2559/files/pcsx2_ps2_emulator_for_pc.pdf
    • https://771ca381-6f74-42da-98cb-0a50e62ac45d.filesusr.com/ugd/b9801a_9522c24b7608413188293806cd48796c.pdf?index=true
    • https://3bb8e9a3-afdc-4bc6-98da-bbe232d3a13f.filesusr.com/ugd/8bf3fc_a0256fc49d1243d0abc0052fe03cd454.pdf?index=true
    • https://f98e031e-18d6-4836-a344-d646406dff06.filesusr.com/ugd/9ea91e_d50d288cfcc54cc1bb9189cbccc40a5f.pdf?index=true
    • https://967a29d7-201c-4eab-be8f-3c1b2e851eb9.filesusr.com/ugd/b85eb0_440dba1d3ae5428f9f1d0cbc520d2058.pdf?index=true
    • https://3ba2379e-4967-47cc-b034-12f31954046b.filesusr.com/ugd/98e298_5da732b959054960b3b5d0138e785099.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0433/5838/8374/files/98162802840.pdf
    • https://cdn.shopify.com/s/files/1/0463/8353/0139/files/2020_audi_r8_v10_performance.pdf
    • https://cdn.shopify.com/s/files/1/0436/1050/5373/files/89489721937.pdf
    • https://cdn.shopify.com/s/files/1/0431/4929/5776/files/78672164692.pdf
    • https://cdn.shopify.com/s/files/1/0429/6943/2230/files/44698499218.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b11.bin
ad39596704257b2fa4995102c04227824aa7e088e17c5f60a06d051c9542bef3
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B11 4916 bytes
font_01_sfnt_off00007bf0.bin
0c72d004d171ed12babb0170bcdd1d002ea0b84b51776052f11d07e302de8281
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BF0 10024 bytes
font_02_sfnt_off00009e42.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x9E42 4324 bytes