Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbca072c85bb0108…

MALICIOUS

PDF

70.6 KB Created: 2020-08-31 10:50:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e776ac54fb3d490c615f53245a554203 SHA-1: 8942f19677ee1e3a733371015d7a6cc3f51e7e64 SHA-256: cbca072c85bb0108b900a17817d2bd15f3495a461f502616f4dc4be600d11dd5
162 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it's a malicious redirector and uses an advance-fee scam lure, referencing lottery and parcel delivery. The embedded URL https://ttraff.cc/wix?keyword=say+something+piano+pdf is a critical finding. While the document body is heavily obfuscated, the presence of this URL and the scam lure strongly suggest a phishing or redirection attack. No scripts were extracted from this sample.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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/wix?keyword=say+something+piano+pdf
    • https://cdn.shopify.com/s/files/1/0437/8345/4871/files/cancer_de_boca_ministerio_da_saude.pdf
    • https://cdn.shopify.com/s/files/1/0438/8575/6568/files/human_resource_assistant_job_description.pdf
    • https://cdn.shopify.com/s/files/1/0435/3848/1311/files/27049336552.pdf
    • https://static.usrfiles.com/ugd/d63aaf_05a690905cce4ef296505f2cdcd1bd32.pdf
    • https://cdn.shopify.com/s/files/1/0435/2930/6272/files/santali_bible_download.pdf
    • https://cdn.shopify.com/s/files/1/0449/7971/6264/files/blotting_techniques_in_biotechnology.pdf
    • https://cdn.shopify.com/s/files/1/0433/5704/4904/files/77800904362.pdf
    • https://cdn.shopify.com/s/files/1/0430/0832/7829/files/20604757046.pdf
    • https://cdn.shopify.com/s/files/1/0440/2026/9221/files/distributive_property_in_a_sentence_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0429/5481/7690/files/wokanozewotosesinamijigu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4052/9816/files/rutax.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_off0000c8db.bin
0e034de5cebc049d675f796a1766e540c68476806e1d6b7293f2a97bc8e2e159		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC8DB 5532 bytes
font_01_sfnt_off0000db8e.bin
362fb2c61945aa456e5774feb6fd5253c40deb4d5b846f996ebf4d07fbcb426c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB8E 15972 bytes

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