Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f9e3f0f62ccba7b…

MALICIOUS

PDF

60.8 KB Created: 2020-08-17 02:32:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 911b4f0ab0e1a9b45ae71f8110ae9f07 SHA-1: e122473fe1b778fe44f6cc90e382eda14b44cf60 SHA-256: 6f9e3f0f62ccba7b77a9ca60718f3a717ede7b375ac7f0addda82013d38e420e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, many of which point to a redirector service and then to external PDF files, suggesting a link farm or redirection attack. The primary malicious URL identified is https://ttraff.cc/pify?keyword=the+smart+shop+application, which is flagged as a malicious redirector. The document's content and structure strongly indicate an attempt to lure users to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=the+smart+shop+application
    • http://rufow.amandalmia.com/uploads/1/3/0/9/130969723/majawu.pdf
    • http://files.tinahilgers.ca/uploads/1/3/2/8/132814136/67dde8da.pdf
    • http://files.mauricesendakcommunityschool.org/uploads/1/3/1/3/131398144/fuvulokedez_faregi_rabazaderoj.pdf
    • http://files.drronmartinez.com/uploads/1/3/2/6/132695392/46039fc33d071.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/8165/3655/files/80857381642.pdf
    • https://cdn.shopify.com/s/files/1/0429/2971/7407/files/xababa.pdf
    • https://cdn.shopify.com/s/files/1/0432/0264/2075/files/togojopajixiz.pdf
    • https://cdn.shopify.com/s/files/1/0430/8339/9329/files/misavaxokusane.pdf
    • https://cdn.shopify.com/s/files/1/0432/3088/8094/files/sikurifokevufipemepo.pdf
    • https://cdn.shopify.com/s/files/1/0430/0403/5221/files/lexazirexupubuxig.pdf
    • https://cdn.shopify.com/s/files/1/0438/8470/7992/files/backward_design_template.pdf
    • https://cdn.shopify.com/s/files/1/0438/3899/6642/files/black_seed_health_benefits.pdf
    • https://cdn.shopify.com/s/files/1/0448/9353/6423/files/kosowuluxa.pdf
    • https://cdn.shopify.com/s/files/1/0434/2956/0486/files/47748195061.pdf
    • https://cdn.shopify.com/s/files/1/0447/8566/4166/files/20536376089.pdf
    • https://cdn.shopify.com/s/files/1/0429/6451/7023/files/xukegifinobilovinipadeg.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/63537272249.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/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000099ed.bin
adf136b9a8d3c09228f486206c191242f06246685c4d71d39b5a6311e6148b39		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99ED 5124 bytes
font_01_sfnt_off0000ab2f.bin
2fee9ab9382b3201b8020d57bb6f61a2b6a104b2b0c32e7bd1b7eb1a89047bf4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB2F 10900 bytes
font_02_sfnt_off0000d0a8.bin
2ec471bc1dd097ba7445d0d98fae4076614f7d308a936bf5c28a382db3fe60d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD0A8 16304 bytes

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