Malicious PDF — malware analysis report

Static analysis result for SHA-256 3267eca9e50c8954…

MALICIOUS

PDF

96.2 KB Created: 2020-11-20 00:14:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 92ae09f4f0fb6ea52d948af80d571f70 SHA-1: d2d47500550f56e887e8c119a19eb4b01c0c58cb SHA-256: 3267eca9e50c89545c1a144414777bc6702824a437055f83515c5b6e5dcbeb69
214 Risk Score

Malware Insights

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

This PDF file is identified as malicious by multiple heuristics and a machine learning classifier, specifically flagging it as a redirector and part of a link farm. The embedded URLs, such as 'https://gettraff.ru/123?utm_term=eug+x760+projector+manual', are designed to lead users to potentially harmful sites. The document's structure and content suggest a phishing or scam attempt disguised as a user manual.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://gettraff.ru/123?utm_term=eug+x760+projector+manual In PDF document text
    • https://furureseseruwa.weebly.com/uploads/1/3/4/4/134481841/fonedofivizatij.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370541/normal_5f9d26c4b343b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408197/normal_5f9ea76ad6cd1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389387/normal_5f9ea53972993.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365638/normal_5f871c414fd70.pdfIn PDF document text
    • http://us-electronics.goes2japan.com/?asin=B00PDAIW5CGrabIn 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/fce18622-d50e-468c-9726-59c606ea3114/half_orc_barbarian_5e.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0538ef97-5446-424b-82dd-602032ece894/gikagonifizuzeliwosuda.pdfIn PDF document text
    • https://s3.amazonaws.com/zusevamasor/dixopafamulugot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/776a2b84-a495-4769-bbfb-2fe53e884f9a/28898788632.pdfIn PDF document text
    • https://s3.amazonaws.com/wofaxil/basovuvumelipoliniz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6634a3a-5af4-4113-a7e2-365354d6ae8e/bukarotuvawexawafaforaf.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013338.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13338 5552 bytes
SHA-256: 2a52fabdf39621a00c85bbbf9504c96e36c13cd20d4fb7cfbb04f6b607fc3331
font_01_sfnt_off00014619.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14619 14388 bytes
SHA-256: f1043a420022ab319c126368dd2e5e4499e05b77b564ad1b38a5b1596a2fa3ff

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