Malicious PDF — malware analysis report

Static analysis result for SHA-256 b603d133fe24d836…

MALICIOUS

PDF

71.2 KB Created: 2020-11-23 21:11:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 7016fb97214eb9e94ead4bead2b0254e SHA-1: 9f834d56b2a0efb908955cfe337e49066189a497 SHA-256: b603d133fe24d8366f6156f3342275f5d27640883167c506bacdc484a203b8e6
214 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 as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of embedded links, many of which point to redirector infrastructure, suggesting a phishing or link farm attack. The primary malicious URL identified is https://gettraff.ru/123. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing attempt, likely delivered as a spearphishing attachment.

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=do+you+need+a+cdl+to+drive+a+school+bus+in+florida In PDF document text
    • https://zesukixugedun.weebly.com/uploads/1/3/4/5/134593530/5038704.pdfIn PDF document text
    • https://dilenobepaw.weebly.com/uploads/1/3/4/6/134662491/wowuboro-ruviwusejab-bapog.pdfIn PDF document text
    • https://mubewawabover.weebly.com/uploads/1/3/4/4/134465459/gadagogifonofel_fogifime_fagurer_lanafan.pdfIn PDF document text
    • https://zukamukenipebo.weebly.com/uploads/1/3/1/3/131380388/aa0a9.pdfIn PDF document text
    • https://tizomejina.weebly.com/uploads/1/3/3/9/133997236/6154639.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/12fb236c-3082-413f-bf4e-76b212714641/star_spangled_banner_sheet_music_viola.pdfIn PDF document text
    • https://s3.amazonaws.com/davawina/26722523655.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39f7d908-d07a-492d-98f9-fe83ac3f2f0f/28910851806.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c38abf69-23bc-46ae-aa2d-073abc0adfc7/gudoxixa.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/analytical_chemistry_notes_for_bsc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02b0a09d-6da5-4d3e-b7b2-d4baa17cb3cf/delozofiru.pdfIn PDF document text
    • https://s3.amazonaws.com/fukezavazuj/wurujujavagi.pdfIn PDF document text
    • https://s3.amazonaws.com/kudefem/3654274848.pdfIn PDF document text
    • https://s3.amazonaws.com/tejuvonixag/35926002798.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cbe8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBE8 5292 bytes
SHA-256: 739c5c694f17ad182d2f5757e9354230d0c3c1d2a170a9fe51f5a100a919c24b
font_01_sfnt_off0000ddee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDEE 10288 bytes
SHA-256: 4d74881a0d53f2bd12f44dd1115b8ebc21b04077e0f78d95d822c88adac5fd00
font_02_sfnt_off0001012a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1012A 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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