PDF malware analysis — malicious · a3543bf1df0f6d25

MALICIOUS

PDF

50.6 KB Created: 2020-12-19 20:15:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05

MD5: 692c1a18eb616022c8d79a8d3ab32578 SHA-1: 3e583ffe3e4226a79bde7c3a25ce93d06d4b1e95 SHA-256: a3543bf1df0f6d25e1255bfa2d1af1d38727caa3eec83d80047e1864c0ef2f1f

194 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF file contains numerous external links, many of which point to redirectors designed to obscure the final destination. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, and 'PDF_SEO_UTM_REDIRECTOR_LINK' specifically flags a lure for free downloads via an SEO redirector. The ClamAV detection and ML classifier further support its malicious nature, identifying it as a phishing trojan.

Machine Learning

Nyx PDF Classifier malicious score 0.7801

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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 lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK

PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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 https://trafffi.ru/aws?utm_term=online+property+valuation+report PDF link annotation
- https://rurizurerenudiw.weebly.com/uploads/1/3/4/6/134649160/4381323.pdfIn PDF document text
- https://resodarapasak.weebly.com/uploads/1/3/4/6/134659305/b5cd2efb991.pdfIn PDF document text
- https://bizalaso.weebly.com/uploads/1/3/4/4/134443832/zukafoxesoviruzali.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369502/normal_5f89bf4d0daf3.pdfIn PDF document text
- https://sixoribena.weebly.com/uploads/1/3/4/8/134848884/9072116.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1698f1ea-0b99-476d-a623-9091b0c4f5e5/gojogegomun.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/02ee734e-ea33-45db-abb9-d7813d7eb316/vetudezafodifer.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/800ec5af-ce1d-4abe-bee7-5098cb0f2361/fawezizozonexefepavatuku.pdfIn PDF document text
- https://s3.amazonaws.com/lanorolowu/mental_arithmetic_test_5_answers.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4538e731-a05c-4455-9c04-74ce3afda0e5/kenmore_stackable_washer_dryer_manual.pdfIn PDF document text
- https://s3.amazonaws.com/lezopobigeza/free_football_games_online_espn_arcade.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ab9868ae-7a99-4c09-943d-8f519cc62d1a/ucsd_econ_courses.pdfIn PDF document text

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