Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b0f350ad3c65969…

MALICIOUS

PDF

59.5 KB Created: 2020-08-14 04:56:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d7c647157dda549ffda14d722f62bd15 SHA-1: 34d0863de9f1d00b8434126a4df4f5624ad5de71 SHA-256: 5b0f350ad3c6596956d4924d9db05cfc3fcb08d593e27cb832c05bdd39b8917f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a redirector infrastructure, which is flagged as malicious. It also hosts a large number of external PDF links, many of which point to benign Shopify domains but are likely part of a link farm to improve SEO for malicious content. The embedded URL 'https://ttraff.cc/pify?keyword=equifax+report+identity+theft+canada' suggests a phishing attempt related to identity theft or financial information.

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=equifax+report+identity+theft+canada
    • http://guxome.goodshepherdyouth.net/uploads/1/3/1/0/131070993/gepariroluwolojowuko.pdf
    • http://wipagaf.tomaah.com/uploads/1/3/1/4/131483083/lusubidiwoweluka.pdf
    • http://xomujapap.bellvueacademy.com/uploads/1/3/1/4/131453215/a5ef4433.pdf
    • http://sisata.isoldeetlesbens.com/uploads/1/3/1/4/131409090/1652444.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/2805/2130/files/guridegom.pdf
    • https://cdn.shopify.com/s/files/1/0429/0704/1959/files/43342301992.pdf
    • https://cdn.shopify.com/s/files/1/0432/3413/2131/files/dumomajuzopomezefofemerox.pdf
    • https://cdn.shopify.com/s/files/1/0436/8993/5002/files/destinos_an_introduction_to_spanish.pdf
    • https://cdn.shopify.com/s/files/1/0431/5417/8216/files/68210052531.pdf
    • https://cdn.shopify.com/s/files/1/0434/3303/3877/files/jolumekefakuropibu.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8758/files/30663631789.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/1773817077.pdf
    • https://cdn.shopify.com/s/files/1/0436/0005/2387/files/54968070107.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_off0000abe2.bin
98361e5d2e3dc17e3cf47c3f7d1c789deb095e7de38c5eb792272317cd99b00b
pdf-font-stream PDF embedded font (sfnt) at offset 0xABE2 5288 bytes
font_01_sfnt_off0000bde3.bin
295603ea3b8d98da2c24160006bf2b56cf23dd5417f92f28283abe087eb477ae
pdf-font-stream PDF embedded font (sfnt) at offset 0xBDE3 10392 bytes