Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa642bed5e0a4432…

MALICIOUS

PDF

42.3 KB Created: 2020-08-13 21:21:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae4339537c515e547503758349a95685 SHA-1: 26d3bf64db6f709325f04496298c171ab6ad9f11 SHA-256: aa642bed5e0a4432b9e58ddc395db3b4cd8dbb7dbc242ebed3914e61494afbd3
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at ttraff.com. This suggests a phishing or redirection campaign, likely attempting to lead users to malicious content or further compromise. The document body, though heavily obfuscated, contains the URL https://ttraff.com/pify?keyword=guided+reading+level+of+fly+guy+books, indicating a lure related to children's books. No scripts were extracted from this sample.

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=guided+reading+level+of+fly+guy+books
    • http://files.elkcountyhistoricalsociety.org/uploads/1/3/0/7/130775195/nitunukilid_tosogo.pdf
    • http://folinibo.opencommunitytheatre.com/uploads/1/3/1/4/131413718/4c41aa50.pdf
    • http://luvupixur.dkgthetazeta.org/uploads/1/3/0/7/130740221/kowezetixemalux.pdf
    • https://cdn.shopify.com/s/files/1/0428/8466/1414/files/belezisabojapogozafe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/marifurozijuzaledenikegi.pdf
    • https://cdn.shopify.com/s/files/1/0437/8260/2904/files/27526642486.pdf
    • https://cdn.shopify.com/s/files/1/0435/1298/7802/files/zupal.pdf
    • https://cdn.shopify.com/s/files/1/0452/1033/7440/files/xegevovezezisukuraxusatu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9282/0643/files/alternative_asset_classes.pdf
    • https://cdn.shopify.com/s/files/1/0440/7007/6566/files/3d_maker_for_solidworks.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/62780844137.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/33374625424.pdf
    • https://cdn.shopify.com/s/files/1/0434/1691/2023/files/88174558714.pdf
    • https://cdn.shopify.com/s/files/1/0431/2865/1938/files/30620763821.pdf
    • https://cdn.shopify.com/s/files/1/0437/8827/1773/files/digital_electronics_questions_and_answers_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/7019/2802/files/69464097335.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_off00006624.bin
d10caa00f6707e2d7f41277aae8eac722ad3335aa2cf6cdb5d76052d017551ec
pdf-font-stream PDF embedded font (sfnt) at offset 0x6624 5472 bytes
font_01_sfnt_off000078e3.bin
05a940f233fb48fcd8458dfcb8651855c78efdde3d7d4e1dee380f0f8a6e22d7
pdf-font-stream PDF embedded font (sfnt) at offset 0x78E3 10352 bytes