Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e9636ea934293bc…

MALICIOUS

PDF

38.9 KB Created: 2020-08-14 07:14:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d57e3da93aee656c645804e01b96e7c SHA-1: 738bad684a5ba92e6dc36ab226c34db68feba8e8 SHA-256: 6e9636ea934293bc5fbfcbc09e0f97a6efda33f15ee24ab307a5641d1da34744
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm and a critical heuristic firing for a malicious redirector. The embedded URL 'https://ttraff.cc/pify?keyword=verbo+avoir+in+francese+forma+negativa' is a strong indicator of malicious intent, likely leading to a phishing or malware download site. The presence of numerous links, many pointing to Shopify, suggests an attempt to obscure the true destination or to appear as legitimate content.

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/pify?keyword=verbo+avoir+in+francese+forma+negativa
    • http://files.derrenbackergroupbenefits.com/uploads/1/3/1/6/131607544/rakigifizonaro.pdf
    • http://files.jeremiah2911class.org/uploads/1/3/1/3/131379099/bd2135b198ae6.pdf
    • http://gebafuki.fusioneventsworldwide.com/uploads/1/3/2/6/132695471/f5309.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/4583/8239/files/instant_notes_in_genetics_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/9850/3336/files/curso_frances_principiantes.pdf
    • https://cdn.shopify.com/s/files/1/0429/9954/6010/files/27924156300.pdf
    • https://cdn.shopify.com/s/files/1/0431/2308/1373/files/gilekoteza.pdf
    • https://cdn.shopify.com/s/files/1/0429/4495/4527/files/remowisali.pdf
    • https://cdn.shopify.com/s/files/1/0429/2067/3433/files/boxulesikotomososup.pdf
    • https://cdn.shopify.com/s/files/1/0431/2154/1277/files/physics_cutnell_10th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0430/4253/7629/files/xuvupefotajan.pdf
    • https://cdn.shopify.com/s/files/1/0429/5901/2006/files/libabegatada.pdf
    • https://cdn.shopify.com/s/files/1/0430/0262/6202/files/datozutivekejuzarogizofej.pdf
    • https://cdn.shopify.com/s/files/1/0439/9936/3222/files/bozifim.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005922.bin
5d7277959c4894a359732afa5f492f4d872a3812addaff0eaca1ea15a9071caa
pdf-font-stream PDF embedded font (sfnt) at offset 0x5922 5332 bytes
font_01_sfnt_off00006b37.bin
8c171d07fa5515ac882b0d6fc55bc083746b7a932fd352e52d29d6b6e92f1703
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B37 11084 bytes