Malicious PDF — malware analysis report

Static analysis result for SHA-256 4284345c1b45aca2…

MALICIOUS

PDF

50.7 KB Created: 2020-08-09 06:07:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 627a96d9e61c48b8e597aa578cfad106 SHA-1: 1dd61063e74a181d704df20dbccc39c12d36841e SHA-256: 4284345c1b45aca2785a399b0713fc949b16894f9321de3e1c0aafcd442dc3ee
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to a redirector service (ttraff.com) known for malicious activity. The document body is heavily obfuscated, but the presence of the malicious redirector link and the sheer volume of outbound links suggest a link farm or phishing attempt designed to lead users to harmful content. No scripts were extracted, and the document body itself does not contain actionable text, making the link analysis the primary indicator of malicious intent.

Heuristics 3

  • 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.
  • 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=firewall+architecture+pdf
    • http://files.alissabethphoto.com/uploads/1/3/1/6/131606454/koxeja.pdf
    • http://files.annagalatirealtor.com/uploads/1/3/0/7/130776718/979473.pdf
    • http://files.packandpostalcenter.com/uploads/1/3/0/9/130968972/felikoniwipowosi.pdf
    • http://files.nhsvolleyball.com/uploads/1/3/1/1/131163559/234907.pdf
    • https://cdn.shopify.com/s/files/1/0433/9623/5415/files/command_block_enchanting.pdf
    • https://cdn.shopify.com/s/files/1/0434/7602/5497/files/95149989325.pdf
    • https://cdn.shopify.com/s/files/1/0431/2137/7434/files/11237238590.pdf
    • https://cdn.shopify.com/s/files/1/0434/0783/5293/files/world_famous_buildings_and_their_architects.pdf
    • https://cdn.shopify.com/s/files/1/0434/9722/6402/files/ruviraxopux.pdf
    • https://cdn.shopify.com/s/files/1/0431/1816/6167/files/journal_of_social_issues.pdf
    • https://cdn.shopify.com/s/files/1/0438/4430/5046/files/26071848240.pdf
    • https://cdn.shopify.com/s/files/1/0429/8555/4073/files/50555609037.pdf
    • https://cdn.shopify.com/s/files/1/0435/5578/2819/files/zelefewesizizofezitoduki.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/59854739703.pdf
    • https://cdn.shopify.com/s/files/1/0432/5729/9097/files/23644618712.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008adc.bin
2f5fc812a425226b7b0e98def72187fe90bac26141168ed618418cec21907c20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8ADC 5112 bytes
font_01_sfnt_off00009c4c.bin
40454580cc652d023456d510a84b2ebce6d920f4576723f67f87ef1624ada402		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C4C 9888 bytes

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