Malicious PDF — malware analysis report

Static analysis result for SHA-256 066732c02c486f3b…

MALICIOUS

PDF

46.2 KB Created: 2020-08-12 10:31:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b1b8db93f52dbc17c78116d06a77b8b8 SHA-1: 6b346285019fe41f46656552f10588da2cc87bc2 SHA-256: 066732c02c486f3b1d5bc62b056966bf0d1b50ee2ad461efae2f7d552a85b4d0
154 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, with a critical heuristic identifying it as a malicious redirector and a link farm. The primary malicious URL, https://ttraff.com/wb?keyword=pwm%20solar%20charge%20controller%20anleitung%20deutsch%20pdf, is flagged as malicious. The document body, though corrupted, contains references to this URL and other Shopify links, suggesting a lure to a malicious site. The ML classifier strongly supports the malicious verdict.

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/wb?keyword=pwm%20solar%20charge%20controller%20anleitung%20deutsch%20pdf
    • http://bonutapag.absconstruct.net/uploads/1/3/1/4/131482976/e6f9cb2919e520.pdf
    • http://files.weddingstentsevents.com/uploads/1/3/2/6/132681343/b774c1fec1731.pdf
    • http://files.jenningssheffield.com/uploads/1/3/1/4/131413766/jupixezof-bafusurim-vuxuvew.pdf
    • http://xawikeg.projectahimsa.org.au/uploads/1/3/0/8/130814238/dedoxigugogobak-romudedinevo-xiwakanufedivu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53151925343.pdf
    • https://cdn.shopify.com/s/files/1/0435/9897/1038/files/mimosigusodatidefipu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kewosa.pdf
    • https://cdn.shopify.com/s/files/1/0437/6484/2647/files/normalidad_y_anormalidad_en_psicopatologia.pdf
    • https://cdn.shopify.com/s/files/1/0440/6460/4310/files/wijenozeki.pdf
    • https://cdn.shopify.com/s/files/1/0444/6614/3399/files/c_mcq_questions_answers.pdf
    • https://cdn.shopify.com/s/files/1/0437/3502/3770/files/vertical_arrow_technique.pdf
    • https://cdn.shopify.com/s/files/1/0440/4301/0198/files/mysql_connection_string.pdf
    • https://cdn.shopify.com/s/files/1/0430/4958/2743/files/26929002457.pdf
    • https://cdn.shopify.com/s/files/1/0433/8325/9301/files/personal_statement_examples_for_university.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_off00006ee0.bin
32188922486e8481d93ae770c2c3bc5ef88d0bd1cce3a5206e5e44a8d745f8ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE0 5664 bytes
font_01_sfnt_off0000820b.bin
0d08b0b167af83b98a158f4f254c07f9f1c5adf659b6d3f3798d279b00eac9b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x820B 13012 bytes

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