Malicious PDF — malware analysis report

Static analysis result for SHA-256 f879645dad94e73b…

MALICIOUS

PDF

41.6 KB Created: 2020-08-22 00:52:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6813a9d73901b5b8f1ef3f95e5265198 SHA-1: c4ab518c80dbba8799e546cbd99d17adae6badab SHA-256: f879645dad94e73bf495992fb8606a583b8abf688bf6ecb987d0de62e748813f
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific malicious redirector URL. The document body, though heavily obfuscated, contains the text 'Camerafi live free for pc' and the malicious URL 'https://ttraff.cc/pify?keyword=camerafi+live+free++for+pc'. This suggests a social engineering lure to trick users into downloading potentially unwanted software or malware. The PDF also contains numerous links to Shopify-hosted PDFs, likely part of an SEO manipulation scheme to improve search engine ranking for malicious content.

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.cc/pify?keyword=camerafi+live+free++for+pc
    • http://nawonew.a-1autoinc.com/uploads/1/3/1/4/131453724/sozavosijun-gizamugano-xaxusufuzevi.pdf
    • http://files.ps177.com/uploads/1/3/1/3/131379111/7825439.pdf
    • https://cdn.shopify.com/s/files/1/0434/8693/7253/files/24570321566.pdf
    • https://cdn.shopify.com/s/files/1/0433/4606/7621/files/46826042959.pdf
    • https://cdn.shopify.com/s/files/1/0427/7898/4614/files/89254106178.pdf
    • https://cdn.shopify.com/s/files/1/0432/5385/8472/files/55927881883.pdf
    • https://cdn.shopify.com/s/files/1/0434/2058/2050/files/gartner_studios_template_61407.pdf
    • https://cdn.shopify.com/s/files/1/0434/0819/5735/files/spectra_s2_breast_pump_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xezunegudowafosixezuvi.pdf
    • https://cdn.shopify.com/s/files/1/0459/0452/7514/files/gozifeg.pdf
    • https://cdn.shopify.com/s/files/1/0430/0747/5875/files/pititak.pdf
    • https://cdn.shopify.com/s/files/1/0436/6794/7673/files/20800233938.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_off000065f7.bin
06703632d65fca820c70b688e65e680212b16c59bf904938825d67d1e5ef67c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65F7 4948 bytes
font_01_sfnt_off000076bc.bin
e326959059f897f883974faf150c84ec5f94fadd2d1da13ccc7a3f5f66291514		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76BC 10156 bytes

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