Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0b2b600b148578b…

MALICIOUS

PDF

74.8 KB Created: 2021-01-15 07:47:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 04bad35a06999ae2d17444cc39dd178c SHA-1: b97a6b6398a05a770ca7ebe20976e4e4a957a758 SHA-256: e0b2b600b148578b92dba2d0a96df35a0ab4018d8af18c1afa6978503607dec8
214 Risk Score

Malware Insights

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

This PDF file contains a link farm designed to redirect users to malicious infrastructure, masquerading as a free textbook download. The primary malicious URL identified is 'https://gettraff.ru/123?utm_term=cecil+textbook+of+medicine+25th+edition+pdf+free+download'. The presence of numerous external links and the ML classifier's high confidence score indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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=cecil+textbook+of+medicine+25th+edition+pdf+free+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368221/normal_5f9d1f4d30edf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368494/normal_5fd9122123146.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455669/normal_5fd77f5dc7a09.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383340/normal_5fc067fd76b32.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417980/normal_5faa532972bc5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446287/normal_5fae70b00ba24.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460231/normal_5fdccf2746672.pdfIn PDF document text
    • https://luvodufugatese.weebly.com/uploads/1/3/4/8/134893210/6129388.pdfIn PDF document text
    • https://sivivaleretuvu.weebly.com/uploads/1/3/4/3/134324596/mulebajodagugep.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447915/normal_5ff0f63e786c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393029/normal_5fc1665898fac.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/50541143535.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/midas_m32_edit_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/tarwe_allergie_informatie.pdfIn PDF document text
    • https://s3.amazonaws.com/pazerogasarinu/6985243028.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_off0000e43d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE43D 5744 bytes
SHA-256: 6f69fc2b1790ec2146b93515704af76ff45a72922d429d8e47bdb512f09fec35
font_01_sfnt_off0000f7b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7B2 11116 bytes
SHA-256: ea372cdc7269eccbf53f77a8360c44b5e84d43140e33abdf66559c84929505f6

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