Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d9b15936b8f553f…

MALICIOUS

PDF

48.0 KB Created: 2020-11-23 20:30:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ec815f0798a371edf30a74654e58e84b SHA-1: beed91be0a897e9a63cbcb0f818a0fff4fb35fee SHA-256: 8d9b15936b8f553ffedc040cfe9d68edb84a9c4729e883db945c79512ddc7388
232 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document is identified as malicious due to its structure and embedded links. It functions as a redirector, leveraging a screenshot lure to entice users to click on a link that leads to malicious infrastructure. The presence of numerous external PDF links suggests a link farm, potentially for SEO manipulation or to distribute further malicious content. While no scripts were explicitly extracted, the PDF's nature and the malicious redirector link strongly indicate an attempt to deliver a payload or phish credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7172

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 48 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://ggtraff.ru/strik?utm_term=tirso+federico+rosas+villagran
    • https://vosuwuzede.weebly.com/uploads/1/3/4/7/134743003/vimemanifitof-dobop-tedunud-paronamisugeve.pdf
    • https://bonifivudinuf.weebly.com/uploads/1/3/4/3/134305406/disofipiputa.pdf
    • https://xilorufanil.weebly.com/uploads/1/3/0/7/130739938/lobitum.pdf
    • https://jawimuxuketeg.weebly.com/uploads/1/3/4/7/134763527/43ffe27.pdf
    • https://saniluje.weebly.com/uploads/1/3/4/3/134323688/287a4f9.pdf
    • https://kapebuzuzevasa.weebly.com/uploads/1/3/4/5/134587117/lufeteso_xumabawerituriv_mijuzevif.pdf
    • https://kinimozudex.weebly.com/uploads/1/3/4/4/134498073/remudowep.pdf
    • https://sekorora.weebly.com/uploads/1/3/4/8/134856449/1751269.pdf
    • https://uploads.strikinglycdn.com/files/486a2e97-75a1-4641-8f56-0e7bca5ebc0a/8182965796.pdf
    • https://uploads.strikinglycdn.com/files/87c1b751-ae22-492b-833c-fee956ca0c70/sibawizuzelodo.pdf
    • https://s3.amazonaws.com/gajejasa/1743387607.pdf
    • https://uploads.strikinglycdn.com/files/21045794-34c5-41d0-a66d-44bdee894ca0/nunisitadufiga.pdf
    • https://s3.amazonaws.com/rezugekolaba/e_waste_management_rules_2016.pdf
    • https://uploads.strikinglycdn.com/files/9aa2676d-75fd-43ad-94f1-c79e86b0ea3b/23110988870.pdf
    • https://s3.amazonaws.com/timafatafej/sulowasigiwip.pdf
    • https://uploads.strikinglycdn.com/files/8c807c8d-c576-4d3f-abab-a1adee61dbbf/kotuguj.pdf
    • https://s3.amazonaws.com/tutasujal/cucumber_extent_report_github.pdf