Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb64b8d74778795f…

MALICIOUS

PDF

8.6 KB Created: 2021-08-30 08:34:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 0ab7e50a358adc86065eb4e6c30739d1 SHA-1: 5ab3247a6bc9e14ba481dab8743e890054c30a14 SHA-256: fb64b8d74778795ff51ed1afdbbeda54fbb3033e7766f63eeaecb25b284bc64e
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only lure, typical for phishing or malware delivery. It contains a deceptive link to 'vasilisagubareva2000.updta78-serv1ce.info', which is likely malicious. Although no scripts were explicitly extracted, the PDF structure and heuristics suggest it's intended to trick the user into navigating to the malicious URL, potentially leading to a further stage of attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5533

Heuristics 4

  • Image-only PDF lure links to a deceptive (typosquat) host high PDF_IMAGE_LURE_DECEPTIVE_HOST_LINK
    PDF is image-heavy with little real text and its clickable action targets a host that impersonates a security/service/brand word with a look-alike homoglyph substitution — a digit OR a confusable letter (e.g. 'serv1ce', 'servlce', 'upd4te', 'm1cr0s0ft') — on a domain that is not a known-good site. This is a credential-phishing / fake-update carrier shape: a screenshot-like page funnels the victim to a deceptive look-alike destination.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 2 image(s), only 0 text block(s), carries a click-outward action, and is only 8 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://vasilisagubareva2000.updta78-serv1ce.info PDF link annotation
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00000f1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1E 12396 bytes
SHA-256: 9651c78dad64c31681e27aaf77368dfa0aab65a72df78104afb2fc8edab34c59

Open this report in the interactive analyzer, or submit your own file for analysis.