Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e2a0591cca11d8f…

MALICIOUS

PDF

65.8 KB Created: 2020-12-21 17:52:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 52debeed1a06e8a20a951debff36474e SHA-1: 464a2d03dfd4f2c12b58bc35649a5e22cdff5dc5 SHA-256: 0e2a0591cca11d8fb80b51c5f7fec3b10b16d85874367024621ee4aaec98eba1
252 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file contains a large number of links to external PDFs hosted on disposable domains, indicating it functions as a link farm. One of the initial links points to a known malicious redirector, suggesting a malicious workflow. The ClamAV detection and ML classifier further support its malicious nature, likely serving as a lure for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffmen.ru/aws?utm_term=revit+2018+trial In PDF document text
    • https://tazejoga.weebly.com/uploads/1/3/1/3/131383942/e5d4abcf36.pdfIn PDF document text
    • https://gizalikujaxemif.weebly.com/uploads/1/3/4/6/134606641/dunez.pdfIn PDF document text
    • https://tesokumerapaj.weebly.com/uploads/1/3/4/5/134522001/74d927a2.pdfIn PDF document text
    • https://dadoxagowona.weebly.com/uploads/1/3/4/6/134677816/f2a922cd.pdfIn PDF document text
    • https://bitebizato.weebly.com/uploads/1/3/4/5/134583528/6a5cbf7a7.pdfIn PDF document text
    • https://genamimiwovem.weebly.com/uploads/1/3/1/6/131636881/9c57f945a0f70.pdfIn PDF document text
    • https://vaxeratomox.weebly.com/uploads/1/3/4/3/134397216/zopesugepi.pdfIn PDF document text
    • https://fadufavibog.weebly.com/uploads/1/3/4/8/134889314/febipisupusipimisiw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425484/normal_5fb87ae60b7dc.pdfIn PDF document text
    • https://mevamakokuvafas.weebly.com/uploads/1/3/4/0/134040887/simuwul.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458837/normal_5fb8c954e8886.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393190/normal_5fb2cc8c53220.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381091/normal_5f8f9cb744bfd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367271/normal_5fb7ba6cd8cad.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c201.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC201 5088 bytes
SHA-256: 35d4731fcd1613ee3e631d0ffe46757049fdb84133a860a40389e179c8979525
font_01_sfnt_off0000d36b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD36B 11548 bytes
SHA-256: b9abeb9123472eeae78b62ee6c7b6db1ab3a34157f99b0fb0c5a0fa8a5115828

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