Malicious PDF — malware analysis report

Static analysis result for SHA-256 6001d4397b22292c…

MALICIOUS

PDF

45.2 KB Created: 2020-09-01 14:46:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a89b0abdf101e825bb19bd80b028c744 SHA-1: 906b78499551f0b517a22a1dac33efbf8660bc22 SHA-256: 6001d4397b22292c1b585953633582e68d37210ef010d336185e681111182088
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. The document body, though heavily obfuscated, also contains this URL and numerous other links to Shopify-hosted PDFs, suggesting a link farm or SEO poisoning tactic. The primary malicious URL is likely intended to redirect the user to a more harmful site.

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/wix?keyword=6th+grade+latitude+and+longitude+worksheets In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9590/8761/files/aggression_definition_psychology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/18410569865.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6082/9087/files/mufanejufetajosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8317/7885/files/2835643428.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0652/4583/files/braille_decoder_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4661/6733/files/gipolokixuwumiju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8693/7248/files/functional_nanomaterials.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5314/6527/files/super_king_size_bed_sheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6495/8879/files/yum_list_installed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4492/8674/files/matovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0519/3885/files/spitz_catalogue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0682/7428/files/47542998585.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000050e5.bin
d89c328e406ef08fa9ea74d1b22ac3f955aa7dc5e10a48e2482030220bc40262		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50E5 5300 bytes
font_01_sfnt_off000062f7.bin
0bbb0489824061742d955544da84158ded4e5824f1c3117717bdb5afc0abe9c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62F7 14468 bytes
font_02_sfnt_off00008ff2.bin
c988415812f594187b0a0ed75dc52802e798e1695b49bd300f8412a65040a449		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FF2 16204 bytes

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