Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f61f7acda4d6673…

MALICIOUS

PDF

42.7 KB Created: 2020-08-21 20:01:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aaaf42be6a25ac0da6de168b7d459a34 SHA-1: 9811124f4c7217f1bc4a2d2923e3e32c66ac0e75 SHA-256: 3f61f7acda4d6673732480f00a028252511d053ada63ddda52128d6aec96751b
128 Risk Score

Malware Insights

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

The PDF file contains a link farm and a malicious redirector URL, indicating an attempt to lead the user to a compromised site. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=calendar+template+for+windows+10', which is flagged as a malicious redirector. This suggests the document's primary purpose is to exploit users through deceptive links, likely for phishing or malware delivery.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=calendar+template+for+windows+10
    • http://files.pinheadsquilting.info/uploads/1/3/0/7/130739593/rukadurasekilute.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/60867163309.pdf
    • https://cdn.shopify.com/s/files/1/0430/8402/1921/files/59433034528.pdf
    • https://cdn.shopify.com/s/files/1/0433/5563/5880/files/tkinter_animation_example.pdf
    • https://cdn.shopify.com/s/files/1/0433/1926/3397/files/suddenlink_tv_guide_marietta_ohio.pdf
    • https://cdn.shopify.com/s/files/1/0432/9072/2454/files/87219828428.pdf
    • https://cdn.shopify.com/s/files/1/0450/6232/4376/files/38904620434.pdf
    • https://cdn.shopify.com/s/files/1/0431/6341/8784/files/5977756218.pdf
    • https://cdn.shopify.com/s/files/1/0432/1571/6516/files/96418246182.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/stratego_rules.pdf
    • https://cdn.shopify.com/s/files/1/0439/3864/4136/files/pdf_split_merge_download.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_off00006965.bin
87c7be65a9393b89bae85b7e649d11fa20281826a29b2d270fd9548ad2b7df5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6965 5380 bytes
font_01_sfnt_off00007bae.bin
da4e3e637240cd094ea7cd409b602170fcbbb350ef843198dc35d5c073359cdf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BAE 10060 bytes

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