Malicious PDF — malware analysis report

Static analysis result for SHA-256 103f076529f0fb54…

MALICIOUS

PDF

44.8 KB Created: 2020-08-17 12:22:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74eb7c3d3894301cb2d6985e1d76e908 SHA-1: 2afa7314c05fcd79e52ab72270ac7a9e424b2d85 SHA-256: 103f076529f0fb54178b2dd5f5f742a6c4f146df6bc1aab11fabac2d4283ed19
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, with a critical heuristic firing indicating it's a link farm designed to redirect users. The primary redirector URL, 'https://ttraff.com/pify?keyword=anaglyph+full+movie', is flagged as malicious. While many other links point to Shopify, the presence of the malicious redirector and the sheer volume of links suggest a phishing or malicious redirection attempt, likely delivered as a spearphishing attachment.

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.com/pify?keyword=anaglyph+full+movie
    • http://files.nhconstructionlaw.com/uploads/1/3/1/4/131408250/jabenukel-nofadutotapot.pdf
    • http://files.malgraphy.com/uploads/1/3/1/4/131438583/watijirakegizif.pdf
    • http://files.support.famhealth.com/uploads/1/3/1/4/131437740/3357936.pdf
    • http://files.livingwordcumberland.org/uploads/1/3/1/3/131381640/df7ba381.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.opentle.org
    • https://cdn.shopify.com/s/files/1/0447/9637/9285/files/plague_inc_prion_mega_brutal_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/4162/8072/files/81929364882.pdf
    • https://cdn.shopify.com/s/files/1/0430/8772/4704/files/pdf_watermark_remover_register_key.pdf
    • https://cdn.shopify.com/s/files/1/0431/1518/4277/files/sedijuja.pdf
    • https://cdn.shopify.com/s/files/1/0432/2240/1192/files/83361332429.pdf
    • https://cdn.shopify.com/s/files/1/0429/5540/7511/files/bamotaginar.pdf
    • https://cdn.shopify.com/s/files/1/0433/2794/6904/files/pifafuxunimebubuwev.pdf
    • https://cdn.shopify.com/s/files/1/0430/3667/2162/files/rirusinerososovizikipodov.pdf
    • https://cdn.shopify.com/s/files/1/0431/7567/4014/files/pikipudubafajela.pdf
    • https://cdn.shopify.com/s/files/1/0430/8697/1033/files/basic_principles_of_internal_auditing.pdf
    • https://cdn.shopify.com/s/files/1/0434/3565/5335/files/vonugizigibosisaje.pdf
    • https://cdn.shopify.com/s/files/1/0430/1045/7753/files/80227392169.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://www.gnu.org/licenses/gpl.html

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f3f.bin
348dd3a3c48f817f80493f6609729a273d4cdf69fd4c27017c70602f5f6088a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F3F 5192 bytes
font_01_sfnt_off000070ca.bin
accc99383f7588111a88adc31dd7a990013b99179bb78a55e88b0b3c3939df35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70CA 6648 bytes
font_02_sfnt_off00008270.bin
74fe8776a439086b8765ed5e12c264dde5be5f0115c6bc49e65dacaf23b1a34d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8270 10492 bytes

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