Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1332744de8dc816…

MALICIOUS

PDF

52.4 KB Created: 2020-08-03 15:24:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a93d9521feec84382d1011d8bf8b5935 SHA-1: 0a5e2a7a21223d3dfe73d9cb3316ba0e76fa34bd SHA-256: d1332744de8dc81607c48e96ad079b8eb172df759d0988d143595a016ce605b3
180 Risk Score

Malware Insights

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

The PDF contains embedded links designed to lure users into downloading more content, specifically promising free CCNA security dumps. One of the primary links redirects to a known malicious domain (ttraff.com), indicating a phishing or credential harvesting attempt. The document body, though heavily obfuscated, contains the lure text and the malicious URL. The PDF also exhibits characteristics of a link farm, likely for SEO poisoning to increase visibility of the malicious content.

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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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=ccna+security+dumps+pdf+free+download
    • http://files.guildhallvt.org/uploads/1/3/1/4/131453850/53813c8.pdf
    • http://files.studiosquid.com.au/uploads/1/3/2/6/132695387/mevezeru_noladobono.pdf
    • http://files.oileranimation.com/uploads/1/3/1/4/131407709/852292.pdf
    • https://cdn.shopify.com/s/files/1/0432/3511/5175/files/xisivez.pdf
    • https://cdn.shopify.com/s/files/1/0429/6045/3785/files/katalenagosibujeligu.pdf
    • https://cdn.shopify.com/s/files/1/0429/0818/8839/files/zeludazarugu.pdf
    • https://cdn.shopify.com/s/files/1/0429/9220/5978/files/81247727294.pdf
    • https://cdn.shopify.com/s/files/1/0432/9455/6320/files/xudulitegifavofitenesof.pdf
    • https://cdn.shopify.com/s/files/1/0435/4464/1695/files/97570801406.pdf
    • https://cdn.shopify.com/s/files/1/0433/3164/9689/files/davegarovifako.pdf
    • https://cdn.shopify.com/s/files/1/0437/6972/5080/files/39098650631.pdf
    • https://cdn.shopify.com/s/files/1/0440/8626/3960/files/best_trucker_gps.pdf
    • https://cdn.shopify.com/s/files/1/0437/8168/5406/files/suropiren.pdf
    • https://cdn.shopify.com/s/files/1/0429/6350/1222/files/jewosowebami.pdf
    • https://cdn.shopify.com/s/files/1/0428/1778/1927/files/snow_white_and_the_seven_dwarfs_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0435/1148/0472/files/13892909049.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_off00008d39.bin
2242aa373fe1e52a3b78ef4f8f3232c94d577caa22ce21d69407843497a6703a
pdf-font-stream PDF embedded font (sfnt) at offset 0x8D39 5400 bytes
font_01_sfnt_off00009f96.bin
297525b25940b3087fe5a8687ac9ee38574a5512ab982a1c8d54462a3a59de4e
pdf-font-stream PDF embedded font (sfnt) at offset 0x9F96 10792 bytes