Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a9c2f28a422c412…

MALICIOUS

PDF

45.9 KB Created: 2020-08-25 00:06:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a17def8e78f6ac9badfe8ea45d214aa7 SHA-1: fd00c0aa58b3e7cb6884d52009682dd1cee45ba3 SHA-256: 1a9c2f28a422c412d38c17666cb8873dd82e677b55e2c4d8221bcb3d759f30eb
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. It also features a PDF link farm hosted on Shopify, with one of the links being 'febenixixedepa.pdf'. The presence of a visual download button lure further supports a malicious intent to trick the user into downloading a payload. No scripts were extracted, limiting the analysis of the payload's behavior.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=avast+battery+saver+apk+free
    • http://files.msmohp.com/uploads/1/3/1/4/131437603/1842464.pdf
    • http://files.laparliere.com/uploads/1/3/1/1/131164520/8566175.pdf
    • https://cdn.shopify.com/s/files/1/0437/7804/8161/files/febenixixedepa.pdf
    • https://cdn.shopify.com/s/files/1/0429/2601/4630/files/low_cholesterol_diet_menu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3060/9063/files/construction_and_the_built_environment.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57955619809.pdf
    • https://cdn.shopify.com/s/files/1/0430/9975/0560/files/segment_routing.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bobidaxida.pdf
    • https://cdn.shopify.com/s/files/1/0437/6811/9445/files/12547038333.pdf
    • https://cdn.shopify.com/s/files/1/0438/3096/8480/files/gross_anatomy_of_digestive_system.pdf
    • https://cdn.shopify.com/s/files/1/0441/0372/9304/files/learn_english_grammar_conjunction.pdf
    • https://cdn.shopify.com/s/files/1/0449/7971/6264/files/aws_receive_billing_reports.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005711.bin
0545a06ef5f36acca31d08d70d2b536caa73b2fc4a2a086c14cec1673572bc63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5711 5216 bytes
font_01_sfnt_off000068ee.bin
2cb963040e4515be1aaa63ed3849926998f889846f3f74b0569fe709a5e2484c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68EE 14260 bytes
font_02_sfnt_off000095b9.bin
4bd16c8abd39118228c1571b0005d4eb3b3e943e572fd92a2a80cfcb7b749349		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95B9 16164 bytes

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