Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe41c675f09d47a4…

MALICIOUS

PDF

59.5 KB Created: 2020-11-18 12:31:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: dde1ecf03849dc7afecdc55bb1cc27d0 SHA-1: 320192bc0e53152370d1c7e9a370ea1f0fc70dd6 SHA-256: fe41c675f09d47a42094549b05365202867cac4511b5c485ddb22312990cd7a3
254 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics as malicious, including a redirector link and a link farm. The ML classifier also strongly indicated maliciousness. The embedded links, such as https://traffine.ru/aws?utm_term=input+output+machine+answers, point to known malicious infrastructure, suggesting the document is part of a phishing or malware distribution campaign. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://traffine.ru/aws?utm_term=input+output+machine+answers In PDF document text
    • https://cdn-cms.f-static.net/uploads/4472484/normal_5fb4ebbeabb28.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369765/normal_5f8fb3b8c433f.pdfIn PDF document text
    • https://jowizixevudaw.weebly.com/uploads/1/3/4/4/134489406/gegolenidafef-tobozinegevuxez.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/vudodapazepipux_kijemomebegax_velagokotukif.pdfIn PDF document text
    • https://woniwisupu.weebly.com/uploads/1/3/4/2/134266019/nuvigofewipujapez.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8e4408e-8886-42bd-ab72-1f74baf3817a/xiloxakexanevobuzitux.pdfIn PDF document text
    • https://s3.amazonaws.com/woberiz/xaxikugofusebidupifoxesem.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/86336282801.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/lozezoxudimewotojob.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/7526718668.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ae27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE27 5172 bytes
SHA-256: 9ee524fe0f67cc64c5765a0ba3d74feaf1727927b2bdd8886eccbe51b8f16ccb
font_01_sfnt_off0000bfa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFA1 10052 bytes
SHA-256: 0dd782034073f8747625acf5036e5ffe17c55d7cf31818df8096f0c6708eb660

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