Malicious PDF — malware analysis report

Static analysis result for SHA-256 4479f006757f4e9f…

MALICIOUS

PDF

50.5 KB Created: 2020-08-30 22:57:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ecda6b2ff69e29872a1cbe0292599c2e SHA-1: c95d1680d6bf445a32a2f28ffce9f2f8df499363 SHA-256: 4479f006757f4e9f9e6d160cd07e3e402429918f78a603943eaf87d944a2a7b2
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm with multiple embedded URLs, including a malicious redirector. The primary malicious URL, 'https://ttraff.cc/wix?keyword=not+another+teenage+movie+full+movie+2002+english', is presented in a way that suggests it is a search result for a movie, likely to trick users into clicking. The ML classifier strongly indicated maliciousness, and the presence of a redirector confirms a malicious intent to lead the user to a harmful destination.

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/wix?keyword=not+another+teenage+movie+full+movie+2002+english
    • https://static.usrfiles.com/ugd/18f527_fb77d1f8129748d19e8a3c30d098fa73.pdf
    • https://static.usrfiles.com/ugd/b8c837_759fa00d1b73406ab04d855dd876ea7d.pdf
    • https://static.usrfiles.com/ugd/fd30ac_fe86bb62514b44469ca12dcdfefb633f.pdf
    • https://cdn.shopify.com/s/files/1/0435/9664/4511/files/buludonagamokamut.pdf
    • https://cdn.shopify.com/s/files/1/0461/9164/0739/files/the_hill_have_eyes_300mb.pdf
    • https://cdn.shopify.com/s/files/1/0430/0649/2823/files/vedomudipiviko.pdf
    • https://cdn.shopify.com/s/files/1/0431/5843/8037/files/gesividadix.pdf
    • https://cdn.shopify.com/s/files/1/0433/8630/6710/files/94407662801.pdf
    • https://cdn.shopify.com/s/files/1/0432/1152/2209/files/zalibevenuvuzeg.pdf
    • https://cdn.shopify.com/s/files/1/0432/9832/4640/files/botswana_tourism_organisation.pdf
    • https://cdn.shopify.com/s/files/1/0431/6925/1487/files/fakibudiririzidipon.pdf
    • https://cdn.shopify.com/s/files/1/0431/8402/9854/files/astm_a1064-_17.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_off00007c9c.bin
ecf2e315adf756a61ace8e32d893ebe0a9dccc57047d5b3f53ab1f1f4a36e98f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C9C 5484 bytes
font_01_sfnt_off00008f21.bin
1633a3ba9c68adcca0fae30e82c3bc5a4d22af4d3be9250a7c5827278897bd0c
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F21 14648 bytes