Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cc5f698983a36f4…

MALICIOUS

PDF

41.4 KB Created: 2020-08-19 03:25:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b038c278bc73b8795a48e5fcebd08ea SHA-1: 1b9ed2fdc491ba839cba230434e963c13db5cc68 SHA-256: 8cc5f698983a36f43f8df797416b347d9d10864c62886c5ec67ff9278537d245
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which point to suspicious domains or redirectors. One such redirector is ttraff.com, which is known for malicious activity. The document body, though heavily obfuscated, contains the string 'Animal coloring pages free' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics confirm the presence of malicious links and a link farm, respectively.

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.com/pify?keyword=animal+coloring+pages+free
    • http://wukakuk.stlukeshhi.org/uploads/1/3/1/1/131164243/zejikifimel_kuvozapona.pdf
    • http://ziveve.offbeatmath.com/uploads/1/3/1/4/131438137/e02916c854.pdf
    • http://files.allcustomiron.com/uploads/1/3/0/8/130874201/2779360.pdf
    • http://files.faithfamilymaui.com/uploads/1/3/1/6/131607027/mudokom.pdf
    • http://files.brunswicktravelbasketball.com/uploads/1/3/1/4/131454034/gabewoki.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6166/files/21522701648.pdf
    • https://cdn.shopify.com/s/files/1/0436/4189/7110/files/nodof.pdf
    • https://cdn.shopify.com/s/files/1/0433/8558/5820/files/41693703835.pdf
    • https://cdn.shopify.com/s/files/1/0429/1044/9830/files/zupatixeze.pdf
    • https://cdn.shopify.com/s/files/1/0435/6371/2671/files/desesufamefamixasasole.pdf
    • https://cdn.shopify.com/s/files/1/0437/3577/7445/files/21520956837.pdf
    • https://cdn.shopify.com/s/files/1/0430/3182/2485/files/caramelization_process.pdf
    • https://cdn.shopify.com/s/files/1/0431/4529/8077/files/xukovizejexiv.pdf
    • https://cdn.shopify.com/s/files/1/0432/8731/4585/files/61114291554.pdf
    • https://cdn.shopify.com/s/files/1/0433/7991/6963/files/2025745743.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_off000063eb.bin
1a9f9aba49e620ab068e0e36475c1e1bc57e6f7193a4a65adf8699057c573e75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63EB 5324 bytes
font_01_sfnt_off000075e6.bin
60ab35e2e20d2e4df4c970d71d43ec75b0fa4401ce83604d8616fd84714652ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75E6 10296 bytes

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