Malicious PDF — malware analysis report

Static analysis result for SHA-256 71723de05165ef52…

MALICIOUS

PDF

79.8 KB Created: 2020-08-30 10:48:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3cd7178f193a0bcf564bee79630c5de3 SHA-1: add200e1d0a08b75c73e4d309ae49d3bf294f0c5 SHA-256: 71723de05165ef52151beb385f67b7399827246d2ad1f8be7676c4652561431b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains heuristics indicating it is a malicious redirector and an advance-fee scam lure. It embeds a link to 'ttraff.com', which is flagged as malicious redirector infrastructure. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious intent. No scripts were extracted, but the presence of embedded URLs and the scam lure strongly suggest a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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/wix?keyword=hallelujah+female+singer In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4672/2965/files/veterinary_dental_chart_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8640/5029/files/kobosiku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/1416/0290/files/payment_statement_template.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/2b3f46_4e19969413ec4d3a9f5322437df694f9.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_1779f72805b5484d8595fa4a2d796370.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/c618e9_c50e01b3098a425e8f26cc5eb4d12f7d.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7141/3160/files/46927185304.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9091/2159/files/7190372043.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5109/0071/files/factores_de_riesgo_definicion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2744/8476/files/kulovuwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4893/4295/files/9516190870.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3849/7185/files/muxulepaganinajuku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46676539889.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4522/2557/files/find_instantaneous_rate_of_change.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb9b.bin
7f4221425bce2ad854bb4e28e7273e0f0f53ec9a5cc6e828b39fd89ec01a063e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB9B 5216 bytes
font_01_sfnt_off00010d3a.bin
0ed855ef26d17af82f1ce10fc0e1d83ae78953ace2564c97237d56f6a2882bca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D3A 11044 bytes

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