Malicious PDF — malware analysis report

Static analysis result for SHA-256 20988e8aff4d8c04…

MALICIOUS

PDF

40.6 KB Created: 2020-08-06 01:11:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e6ea1d780f4388ebb8e75e75c1522b8 SHA-1: 66f94068614a6a4c88298d6139dd65544bd4b9ef SHA-256: 20988e8aff4d8c04209692debd580ee73a009a73748db7857167d3117251c560
150 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.com'. This suggests a phishing or redirection attack designed to lead the user to malicious content. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=amarula+cocktails+pdf
    • http://files.indigo-leaf.com/uploads/1/3/1/3/131380889/nakom.pdf
    • http://files.redvalleyfarm.com/uploads/1/3/2/6/132683000/katasosezefa.pdf
    • http://files.naturecoastladyanglers.com/uploads/1/3/1/0/131070581/4beebfa7c.pdf
    • https://cdn.shopify.com/s/files/1/0434/2611/9847/files/ty_beanie_babies_prices_guide.pdf
    • https://cdn.shopify.com/s/files/1/0435/9471/1203/files/creative_discord_role_names.pdf
    • https://cdn.shopify.com/s/files/1/0431/5981/4306/files/concise_oxford_english_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0437/6097/6021/files/1973817081.pdf
    • https://cdn.shopify.com/s/files/1/0434/7107/7542/files/47732007830.pdf
    • https://cdn.shopify.com/s/files/1/0439/1187/2667/files/jafodumutokoduxavevupumok.pdf
    • https://cdn.shopify.com/s/files/1/0429/2132/8807/files/advantages_of_computer_in_business.pdf
    • https://cdn.shopify.com/s/files/1/0438/3699/7792/files/after_effects_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0432/0159/3507/files/58231511036.pdf
    • https://cdn.shopify.com/s/files/1/0434/4669/8146/files/65844815090.pdf
    • https://cdn.shopify.com/s/files/1/0430/8759/3632/files/vikuwutajiwekasoregakop.pdf
    • https://cdn.shopify.com/s/files/1/0438/5269/3669/files/zarexilitudili.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_off000060e2.bin
acdeb21afd909913df968d23ae2f06aaf821e8739cc3f285dc8ff600267993a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60E2 5356 bytes
font_01_sfnt_off00007300.bin
a8064431cdb174b82a81f17b2c8f8717f5f803bc901ffe79fca906ff17872519		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7300 10164 bytes

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