Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e3ce9b7e361d40e…

MALICIOUS

PDF

46.9 KB Created: 2020-08-12 04:06:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa4bd402688d2f024f58f329c4e62ab8 SHA-1: ba1845ddffa5396396785322dd18075c6e073b10 SHA-256: 5e3ce9b7e361d40e2103798454f38210aa80d9ec7b51f3974f4f27ffd79105a4
154 Risk Score

Malware Insights

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

The PDF document contains numerous links, including one pointing to known malicious redirector infrastructure at `https://ttraff.cc/pify?keyword=attestation+de+vente+d+un+terrain+pdf`. This suggests the document is designed to lead users to malicious sites, likely for phishing or malware distribution. The ML classifier also strongly indicated maliciousness.

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=attestation+de+vente+d+un+terrain+pdf
    • http://molev.allresults.com/uploads/1/3/2/6/132696111/kopipibidoj.pdf
    • http://files.newlenoxordnance.com/uploads/1/3/0/7/130775639/6931008.pdf
    • http://wujoge.bluebayoudesigns.com/uploads/1/3/0/8/130873826/9902f4999.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/5221/2130/files/11540550027.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/88694039161.pdf
    • https://cdn.shopify.com/s/files/1/0433/8001/5262/files/56262946246.pdf
    • https://cdn.shopify.com/s/files/1/0439/2825/6680/files/89506185343.pdf
    • https://cdn.shopify.com/s/files/1/0431/8488/1825/files/61191022204.pdf
    • https://cdn.shopify.com/s/files/1/0433/5747/0872/files/go_cruise_throttle_lock.pdf
    • https://cdn.shopify.com/s/files/1/0430/2536/7193/files/obc_application_form_download_in_bengali.pdf
    • https://cdn.shopify.com/s/files/1/0434/8136/6693/files/80464627874.pdf
    • https://cdn.shopify.com/s/files/1/0430/9866/9220/files/arquitectura_y_sustentabilidad.pdf
    • https://cdn.shopify.com/s/files/1/0430/9568/7328/files/mazugoboxeg.pdf
    • https://cdn.shopify.com/s/files/1/0429/6327/1833/files/guxejigovon.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_off0000750b.bin
2ba7fccff201a57308d68c5738a61203dd25e09c616537352811399f456ce18c
pdf-font-stream PDF embedded font (sfnt) at offset 0x750B 5052 bytes
font_01_sfnt_off0000864d.bin
462b78c6c5b4788805e2404419a4f5e46ec6deca47e0b8980b63f3ba1c613296
pdf-font-stream PDF embedded font (sfnt) at offset 0x864D 12256 bytes