Malicious PDF — malware analysis report

Static analysis result for SHA-256 1178b3de95595d2c…

MALICIOUS

PDF

49.7 KB Created: 2020-08-21 19:18:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 035a5b847ddb48519e74aa5df847b904 SHA-1: 4c29b80432b1e9728522ddf58c8f2c63f45fdc0f SHA-256: 1178b3de95595d2c66bd2a3b1af21e2837b1fe5448d9f5c3abf17daaa2ed2b03
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as an annual report. This redirector likely leads to further malicious content or phishing pages. The document also contains a large number of embedded links, many pointing to Shopify, suggesting an attempt to obscure the malicious destination or engage in link farming. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate 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.com/pify?keyword=guggenheim+partners+investment+management+llc+annual+report
    • http://pafivo.burncareinternational.com/uploads/1/3/0/7/130776687/6409469.pdf
    • http://files.literacycouncilofkingsport.org/uploads/1/3/1/4/131482874/senineruniwetu.pdf
    • http://files.stephenreavesart.com/uploads/1/3/2/6/132682822/ee0c0e3fbb2f8c.pdf
    • http://files.apronattitudes.com/uploads/1/3/0/7/130739131/7fb4992.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0434/6858/7174/files/rijatoputeruwitewuzi.pdf
    • https://cdn.shopify.com/s/files/1/0438/2975/6066/files/98247780373.pdf
    • https://cdn.shopify.com/s/files/1/0431/4526/5318/files/87054618063.pdf
    • https://cdn.shopify.com/s/files/1/0432/0192/1184/files/seraxuwuwekosizogupe.pdf
    • https://cdn.shopify.com/s/files/1/0431/1806/7866/files/nedubisig.pdf
    • https://cdn.shopify.com/s/files/1/0428/6647/5174/files/19382844652.pdf
    • https://cdn.shopify.com/s/files/1/0437/7752/3861/files/buramuxutazax.pdf
    • https://cdn.shopify.com/s/files/1/0435/2330/9727/files/despicable_me_2_song.pdf
    • https://cdn.shopify.com/s/files/1/0431/2816/0413/files/46331459333.pdf
    • https://cdn.shopify.com/s/files/1/0440/5926/3128/files/credibility_transferability_dependability_and_confirmability_in_qualitative_research.pdf
    • https://cdn.shopify.com/s/files/1/0436/4677/9552/files/brave_frontier_redemption_of_osiris_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/9652/3423/files/fedex_proforma_invoice_template.pdf
    • https://cdn.shopify.com/s/files/1/0436/6349/1222/files/49728775319.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lebalod.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d67.bin
f7cd6ab1374975244a13bd1f09677fd27ec28ca8ca0c5bbcd2369d0cb016f68c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D67 5320 bytes
font_01_sfnt_off00007f52.bin
03b2b02be7cdf5d3e467f88a6874359bbc7231dfc47d6e7c129a59575521fa82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F52 13596 bytes
font_02_sfnt_off0000ab31.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB31 4324 bytes

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