Malicious PDF — malware analysis report

Static analysis result for SHA-256 e00f34dc827a9222…

MALICIOUS

PDF

86.0 KB Created: 2020-08-07 17:03:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ecbb0e5783724102bbe888aab4eb3be3 SHA-1: c9cf1d7cd162a826aa303a91d93ba9c67f2113e5 SHA-256: e00f34dc827a9222046d5e488c450ba4d0ae22feb26a2d2843ae909ef02f5159
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and a title suggesting a lure for 'medical ethics and deontology pdf'. This indicates the primary goal is to redirect the user to malicious infrastructure. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility and distribution.

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=medical+ethics+and+deontology+pdf
    • http://files.lcrtoa.com/uploads/1/3/1/4/131453302/doparawol.pdf
    • http://files.paytonpropertyservicesllc.com/uploads/1/3/1/6/131637498/2080142.pdf
    • http://files.shadowwolf-studios.com/uploads/1/3/0/9/130969809/bazunidimoxipiwekaki.pdf
    • https://cdn.shopify.com/s/files/1/0433/9816/8743/files/74632693582.pdf
    • https://cdn.shopify.com/s/files/1/0432/0657/4238/files/magirum.pdf
    • https://cdn.shopify.com/s/files/1/0432/7853/2761/files/waf_bypassing_techniques.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20424522606.pdf
    • https://cdn.shopify.com/s/files/1/0430/8896/9882/files/63623985227.pdf
    • https://cdn.shopify.com/s/files/1/0432/5575/9011/files/65302718809.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sejil.pdf
    • https://cdn.shopify.com/s/files/1/0432/5467/7662/files/sezedotuketus.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rowogumidakedodovejizana.pdf
    • https://cdn.shopify.com/s/files/1/0433/4492/0734/files/51707456330.pdf
    • https://cdn.shopify.com/s/files/1/0428/0533/0083/files/21524835290.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_off00011468.bin
7d71726dd23acdd02184cd089ffda69ebdef234b9f00e3899f11fc1cef6fddd9
pdf-font-stream PDF embedded font (sfnt) at offset 0x11468 5428 bytes
font_01_sfnt_off000126f4.bin
a5135adef7d86932fc42570b0f9d28c46e16e3fcd288f28c75e9fded0ef3f3fe
pdf-font-stream PDF embedded font (sfnt) at offset 0x126F4 10544 bytes