Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2df5956f74f192b…

MALICIOUS

PDF

67.6 KB Created: 2020-11-06 22:21:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5cd33643917a7d669d0974dacdb968dc SHA-1: 3ae3ac72e28fecdbaeb5c7e6f67a6b10b549a173 SHA-256: a2df5956f74f192b75d7b3ce29d115dbc7fbd9c1a30795573a3782a1790e0185
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a malicious redirector and link farm, containing numerous external links to PDF files hosted on platforms like Weebly and WordPress. The primary URL, https://cctraff.ru/aws?keyword=apple+symbolism+japan, is flagged as malicious infrastructure. The document's structure, being image-heavy with minimal text and a small file size, strongly suggests a screenshot lure designed to entice users into clicking through to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9547

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.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 67 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://cctraff.ru/aws?keyword=apple+symbolism+japan
    • https://relupopakamon.weebly.com/uploads/1/3/4/4/134455445/xarurupi.pdf
    • https://rulomegujenuguv.weebly.com/uploads/1/3/4/3/134329868/sukujobefedebasiwa.pdf
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/kopiwu_gotatumeturi_bovejixegas_vivikow.pdf
    • https://vafuzetok.weebly.com/uploads/1/3/2/7/132740798/6986838.pdf
    • https://cdn-cms.f-static.net/uploads/4366027/normal_5f86f54d14ade.pdf
    • https://pirivelel.weebly.com/uploads/1/3/4/5/134505874/1606600.pdf
    • https://nikokabiliru.weebly.com/uploads/1/3/1/4/131409463/412712c4.pdf
    • https://fulafokowezoje.weebly.com/uploads/1/3/4/3/134384829/laritigokofapano.pdf
    • https://viwawisigox.weebly.com/uploads/1/3/4/3/134342504/b19c83d8227f6.pdf
    • https://pubosepiko.files.wordpress.com/2020/11/tp_comparaison_agrosystme_et_cosystme.pdf
    • https://uploads.strikinglycdn.com/files/8a986169-2afc-4dae-bc8a-c742f5b8397b/xobudofanitarum.pdf
    • https://givolajokofe.files.wordpress.com/2020/11/japatewajaliwififu.pdf
    • https://zirevafove.files.wordpress.com/2020/11/egypt_new_capital_map.pdf
    • https://fivepapovite.files.wordpress.com/2020/11/jamaica_kincaid_girl.pdf

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