Malicious PDF — malware analysis report

Static analysis result for SHA-256 62fc6414486d3077…

MALICIOUS

PDF

71.9 KB Created: 2020-08-06 06:27:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f1e472c7e9bb45cfee4f590b2b90a3d7 SHA-1: 84a92bbad560d2da5a129121ae5a23ff1f0a0afa SHA-256: 62fc6414486d3077dafa5ba6d83195b80c75a193bab19a034c90379b0279445c
154 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at https://ttraff.com/pify?keyword=alcohol+abuse+definition+pdf. This suggests a phishing or scam attempt, likely delivered as a spearphishing attachment. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious intent.

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=alcohol+abuse+definition+pdf
    • http://files.ksparkleandshine.com/uploads/1/3/1/3/131398591/febef.pdf
    • http://vepov.vrugginks.com/uploads/1/3/2/3/132303382/3bc64df5ed36d39.pdf
    • http://files.5wmadison.com/uploads/1/3/1/6/131637016/dumijex-dosixizom-zetasawofowedu.pdf
    • http://files.goodshift.com/uploads/1/3/1/8/131856186/1e3de.pdf
    • http://files.whycantlance.com/uploads/1/3/1/6/131607163/zixori_gafiwarid_levudozutomufal.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81667611697.pdf
    • https://cdn.shopify.com/s/files/1/0434/5279/2982/files/mugiz.pdf
    • https://cdn.shopify.com/s/files/1/0427/7728/0671/files/mexekanibanupixuk.pdf
    • https://cdn.shopify.com/s/files/1/0432/6345/9486/files/tudoxupekawejevakilu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4511/7342/files/sudaxurozobijijukawe.pdf
    • https://cdn.shopify.com/s/files/1/0428/7679/7081/files/durimixelus.pdf
    • https://cdn.shopify.com/s/files/1/0431/6535/2102/files/xfinity_username_and_password_2017.pdf
    • https://cdn.shopify.com/s/files/1/0437/8106/2813/files/31535507022.pdf
    • https://cdn.shopify.com/s/files/1/0433/9240/1573/files/83241156702.pdf
    • https://cdn.shopify.com/s/files/1/0432/5592/2856/files/73713029689.pdf
    • https://cdn.shopify.com/s/files/1/0434/6042/7928/files/69439410301.pdf
    • https://cdn.shopify.com/s/files/1/0433/7719/7221/files/tumuzug.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dab1.bin
f4aa9e67bbd2aaece521ab2800b7fbf0fe1f5e59ce238f790e4fb260654ce74c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDAB1 5276 bytes
font_01_sfnt_off0000ec9e.bin
0e70a50279bd43c80939feb1e382c28ee9f6e94a65339b8bed3f482835a43af0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC9E 11256 bytes

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