Malicious PDF — malware analysis report

Static analysis result for SHA-256 7297a5c28fb77694…

MALICIOUS

PDF

37.2 KB Created: 2020-09-17 20:02:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: e5c4df007a88096510d7128efbce9871 SHA-1: 9ae89ef3a84ec3029427e326bb5780b5043c4f77 SHA-256: 7297a5c28fb7769432fc05f2c5c825f66e555288474dc750a96d8b064823f728
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a heuristic firing for a malicious redirector link, which points to 'https://ttraff.me/pify?keyword=according+to+white+space+is+not+your+enemy+hagen'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs, some of which are hosted on Shopify. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood 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.me/pify?keyword=according+to+white+space+is+not+your+enemy+hagen In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0972/6874/files/ditimupalavonalize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3237/1622/files/gugavuliginipadolutalut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1856/6306/files/question_answer_pick_up_lines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7604/3423/files/manun.pdfIn PDF document text
    • https://4a7a99f3-8a87-496c-99e1-105ed173dd5a.filesusr.com/ugd/04c368_ca043c13e8d943088f052a553aa2e65b.pdf?index=trueIn PDF document text
    • https://b6fc4ca0-f5e1-4086-a824-cddebc8f88e3.filesusr.com/ugd/c83fdb_ac51f000503f47b4b74f3aebe4f53660.pdf?index=trueIn PDF document text
    • https://67d9b478-26a8-43f3-aa76-3af360b96cd4.filesusr.com/ugd/cec570_22149a1c1bd44691bc03b8f0bb552dce.pdf?index=trueIn PDF document text
    • https://aad1cd90-b90b-4588-8345-5a01583b6219.filesusr.com/ugd/daca0d_06f904715fc248a2af4e522a708edcd9.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6576/9113/files/84996318698.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1412/6759/files/how_to_perform_canalith_repositioning_procedure.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004509.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4509 5520 bytes
SHA-256: 8d18c0a8f37c6195464ac50c9def3826c72d9b2d371958ab621f9d9783d9a89c
font_01_sfnt_off000057ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57AE 10060 bytes
SHA-256: 970b493b5952e302ac1189b2333ce92c5316112cd7a87c7bd7ad631fc309cf64
font_02_sfnt_off00007a20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A20 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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