PDF malware analysis — malicious · ff99ef42142de6b5

MALICIOUS

PDF

41.4 KB Created: 2020-11-24 04:08:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 0376a17f38f24015bba1f73da9da49bf SHA-1: 1ffb9d1f79d52cf44ae5fbb3a23d3b8ed381e198 SHA-256: ff99ef42142de6b580751468e1f0c548a826016587de96d8e999cf9e11bf4e31

232 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document is designed as a phishing lure, presenting itself as a 'Human factors design guide faa' but containing a malicious redirector link. The document's structure, with a single image and minimal text, is typical of screenshot lures. The critical heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms that the embedded URL leads to known malicious infrastructure, likely to deliver a second-stage payload. No scripts were extracted, but the PDF's nature and the presence of multiple external links suggest an attempt to lead the user to a compromised site.

Machine Learning

Nyx PDF Classifier malicious score 0.8493

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 41 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?utm_term=human+factors+design+guide+faa
- https://cdn-cms.f-static.net/uploads/4416143/normal_5f950d4d07ed5.pdf
- https://cdn-cms.f-static.net/uploads/4458840/normal_5fb405105bdb6.pdf
- https://cdn-cms.f-static.net/uploads/4387814/normal_5fa6a2463b7f8.pdf
- https://niritamin.weebly.com/uploads/1/3/4/4/134486676/3739936.pdf
- https://cdn-cms.f-static.net/uploads/4369322/normal_5f9714f5b8462.pdf
- https://cdn-cms.f-static.net/uploads/4382190/normal_5fa8dae36cd2d.pdf
- https://ramokazadi.weebly.com/uploads/1/3/4/4/134470245/kavilala_bopupojoduw_fikutufomelazaf.pdf
- https://tesegedoveveda.weebly.com/uploads/1/3/4/8/134891870/jakof.pdf
- https://s3.amazonaws.com/wixamupelinere/14885178940.pdf
- https://s3.amazonaws.com/pibajuwi/68738230407.pdf
- https://uploads.strikinglycdn.com/files/1aca1f8f-dc4d-4f64-960e-16ccbd08402a/zaxasafirage.pdf
- https://uploads.strikinglycdn.com/files/9db2059d-6605-44d8-aa5f-21fbbe1d56ad/wudunepipexabuwetawi.pdf
- https://s3.amazonaws.com/mejados/assessment_of_communication_and_interaction_skills.pdf
- https://uploads.strikinglycdn.com/files/3b551c63-ad09-4e8d-ba4c-04a00a02d9c4/urban_meyer_book_above_the_line.pdf

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