Malicious PDF — malware analysis report

Static analysis result for SHA-256 69f3e412b43a2da8…

MALICIOUS

PDF

44.5 KB Created: 2020-08-27 22:03:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f731f9bd8aa6f1c1a7b7d656bfd5872d SHA-1: b7b5e5ebd44b10ecada747ace8e5d54ed7fe035a SHA-256: 69f3e412b43a2da8109a8702a3ca5590d2375818757cbe650cb210cb48de1da8
154 Risk Score

Malware Insights

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

The PDF document contains numerous links, many of which point to a link farm infrastructure designed to redirect users to malicious sites. One prominent link, 'https://ttraff.cc/pify?keyword=conectivos+para+reda%25C3%25A7%25C3%25A3o+nota+1000', is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness, supporting the conclusion that this document is part of a phishing or scam campaign.

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=conectivos+para+reda%25C3%25A7%25C3%25A3o+nota+1000
    • http://vejumit.gastrocycling.com/uploads/1/3/1/0/131071252/milipovi-vuviguwapo-gaverurel.pdf
    • http://files.schsprojectgraduation.com/uploads/1/3/0/7/130776142/degatepevosos_labefomolidax.pdf
    • http://negapobov.oliveandfinch.ca/uploads/1/3/2/8/132814930/9d0c0ecb6d.pdf
    • http://vomibuvuv.camillilawoffice.com/uploads/1/3/0/8/130813765/8046273.pdf
    • http://files.holistic-cooking.org/uploads/1/3/0/8/130873741/tujemolizo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/3517/1738/files/mukanobajawevawemebe.pdf
    • https://cdn.shopify.com/s/files/1/0434/0505/0021/files/nuwezoledatozo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6043/6887/files/39575586801.pdf
    • https://cdn.shopify.com/s/files/1/0434/3028/1381/files/extracellular_matrix.pdf
    • https://cdn.shopify.com/s/files/1/0432/7938/4731/files/astrology_answers_gemini_weekly_horoscope.pdf
    • https://cdn.shopify.com/s/files/1/0437/1267/5995/files/mentoring_agreement_form_example.pdf
    • https://cdn.shopify.com/s/files/1/0431/7170/9092/files/23191771478.pdf
    • https://cdn.shopify.com/s/files/1/0431/4424/9499/files/9491876465.pdf
    • https://cdn.shopify.com/s/files/1/0434/8837/9032/files/82918416339.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49816413057.pdf
    • https://cdn.shopify.com/s/files/1/0431/7885/2507/files/98004219612.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_off00006b45.bin
23ba04c3ed47c37b23784bf5da3ee26ffb3f2f0ed10db795d147b92d3f82e1f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B45 5696 bytes
font_01_sfnt_off00007dd6.bin
b9ade2689392fdd38f4395e83c53beca3ea292d6695b6665840ef8bbe3eb3aa7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DD6 12116 bytes

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