Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccf9e552f5db00d3…

MALICIOUS

PDF

112.1 KB Created: 2020-08-04 15:11:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51653f8e45db80b25066806df3e2f815 SHA-1: 88d00e7b36d7681fa6f90b9570af20d46cdf4580 SHA-256: ccf9e552f5db00d365002d016cadf4e798d580ebd710bd4ef904d9be2cb3192c
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic identified a link to a known malicious redirector at ttraff.com, which is likely the ultimate destination for users clicking on these links. The document body is heavily obfuscated and contains the malicious URL, suggesting a phishing or scam attempt.

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=carbon+14+dating+method+pdf
    • http://vaduw.rosieandtherivets.com/uploads/1/3/0/8/130814788/futepa_nevujan_gadufubosis.pdf
    • http://files.gotnlc.com/uploads/1/3/1/4/131454306/fogiz.pdf
    • http://files.lakecookbehavioral.com/uploads/1/3/0/9/130969985/saxuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/7102/0960/files/fasukukilumejagarumidenex.pdf
    • https://cdn.shopify.com/s/files/1/0428/1411/1903/files/xilomi.pdf
    • https://cdn.shopify.com/s/files/1/0435/3851/4071/files/latufolonodenosige.pdf
    • https://cdn.shopify.com/s/files/1/0435/5312/8612/files/85393764233.pdf
    • https://cdn.shopify.com/s/files/1/0430/9480/2589/files/fexena.pdf
    • https://cdn.shopify.com/s/files/1/0430/3123/2674/files/vibemedopuwisex.pdf
    • https://cdn.shopify.com/s/files/1/0432/7509/2132/files/gajuwolejozudunas.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wanojexabe.pdf
    • https://cdn.shopify.com/s/files/1/0430/1740/4573/files/susozazuregaw.pdf
    • https://cdn.shopify.com/s/files/1/0435/3359/8880/files/64820677209.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ziwodukujaluladiludu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4653/5322/files/mafovik.pdf
    • https://cdn.shopify.com/s/files/1/0432/8246/4928/files/75435714641.pdf
    • https://cdn.shopify.com/s/files/1/0427/9821/9420/files/27944591952.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001508f.bin
d352523baef67795a129392da57c57dacedb39fa909b51d5d936706614a452fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1508F 5336 bytes
font_01_sfnt_off00016296.bin
20135aaf9762580a070d7eb0cf80ec39f84355a2965d60932ba49db5ce73d5b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16296 14156 bytes
font_02_sfnt_off00018fb5.bin
8407df14a2738efe3d2aaec449fc7b67f888222f7621c5c094f7d2f3a91843ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18FB5 16064 bytes
font_03_sfnt_off0001a456.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A456 4324 bytes

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