Malicious PDF — malware analysis report

Static analysis result for SHA-256 1eae563b36175ed1…

MALICIOUS

PDF

44.2 KB Created: 2020-08-19 06:09:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 39c4b169f0bcb470c68bbfb5cc6e5afe SHA-1: 16f4d7db4597f67db74bfda5bec077ae7f8f72e3 SHA-256: 1eae563b36175ed1a7483e2bfcf857062a66451a3f6103226a27a8f59e4ecce6
168 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though obfuscated, contains the URL 'https://ttraff.com/pify?keyword=lock+specific+cells+in+excel+spreadsheet', suggesting a lure to a malicious site. The presence of a 'password-protected archive handoff' heuristic indicates that the user might be prompted to enter a password, likely to decrypt a subsequent malicious payload. No scripts were extracted from this sample.

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.com/pify?keyword=lock+specific+cells+in+excel+spreadsheet
    • http://files.m-c-ryan.com/uploads/1/3/1/4/131437725/xetevuwefuvadopixire.pdf
    • http://files.shannonsfitnessdance.com/uploads/1/3/2/6/132695213/981d1c50c6.pdf
    • http://files.redroostergrill.com/uploads/1/3/1/4/131406762/59e6a4578591d.pdf
    • https://cdn.shopify.com/s/files/1/0439/9346/4990/files/mivinudemeju.pdf
    • https://cdn.shopify.com/s/files/1/0431/1141/5962/files/3690878589.pdf
    • https://cdn.shopify.com/s/files/1/0434/6262/3394/files/adharmam_movie_video_songs.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34803766861.pdf
    • https://cdn.shopify.com/s/files/1/0430/1671/6437/files/89013105460.pdf
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/watch_twilight_online_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/5556/2402/files/82788639893.pdf
    • https://cdn.shopify.com/s/files/1/0428/7945/1289/files/tiwafolibono.pdf
    • https://cdn.shopify.com/s/files/1/0438/0891/5613/files/miwogavonuja.pdf
    • https://cdn.shopify.com/s/files/1/0449/5589/3928/files/stock_market_technical_analysis_course.pdf
    • https://cdn.shopify.com/s/files/1/0427/8249/0791/files/gopinodopumezulek.pdf
    • https://cdn.shopify.com/s/files/1/0434/0816/2974/files/93817131348.pdf
    • https://cdn.shopify.com/s/files/1/0430/9480/2593/files/blood_type_genetics_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/4639/5304/files/career_values_scale.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_off000065f2.bin
f28f489a4c5f8165a37b425875cdf50d89627f23a9652fd01adeacac24de25c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65F2 5316 bytes
font_01_sfnt_off000077ef.bin
51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77EF 1800 bytes
font_02_sfnt_off0000807d.bin
5b447cc843ce44ebdb268ec548ff2a09e29e40a8443d7edd4ecce155890a0b9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x807D 10080 bytes

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