Malicious PDF — malware analysis report

Static analysis result for SHA-256 1016f7a29bfe6dfb…

MALICIOUS

PDF

43.0 KB Created: 2020-08-23 21:50:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e32043034ae9e2bd117947979add9ac SHA-1: dfeac09040457f69a344c606708097c08c9a450f SHA-256: 1016f7a29bfe6dfb028dc4d2aca7f641263e8771b4bb88c230013ef333c1e85b
154 Risk Score

Malware Insights

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

This PDF file contains a link to a known malicious redirector, identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The embedded URL, https://ttraff.ru/pify?keyword=cerner+millennium+data+model+reports, is likely part of a phishing or scam campaign. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the presence of a malicious redirector is sufficient to classify the attack pattern.

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.ru/pify?keyword=cerner+millennium+data+model+reports
    • http://jesuxifes.smartonlinebookkeeping.net/uploads/1/3/2/7/132712326/mivovigufesuwib-wonuxaxi-gixoxubilejesum-wegatepadexe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0436/0713/0270/files/query_remove_duplicates_google_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0428/6539/3820/files/bias_fx_2_demo.pdf
    • https://cdn.shopify.com/s/files/1/0431/9156/6493/files/cbt_nuggets_70-_740.pdf
    • https://cdn.shopify.com/s/files/1/0431/7547/7416/files/generic_incident_report.pdf
    • https://cdn.shopify.com/s/files/1/0436/4143/8366/files/8856517809.pdf
    • https://cdn.shopify.com/s/files/1/0431/5270/3645/files/222542787.pdf
    • https://cdn.shopify.com/s/files/1/0435/6472/8479/files/amuleto_roberto_bolao_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0461/6437/7752/files/35327411629.pdf
    • https://cdn.shopify.com/s/files/1/0430/2995/4721/files/application_vnd_msword.pdf
    • https://cdn.shopify.com/s/files/1/0431/7865/5903/files/heart_disease_types.pdf
    • https://cdn.shopify.com/s/files/1/0431/1102/2756/files/76439447312.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_off00006c92.bin
c5b42ff6f080ce0e8777e4aeca9ca40311b569ecf059db88bddb02453e4bb51a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C92 5012 bytes
font_01_sfnt_off00007d71.bin
0812b1bba3c365e7c30ba4b064a529b2a341cba763c7c8fc8caa34d00b3323c0
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D71 9780 bytes