Malicious PDF — malware analysis report

Static analysis result for SHA-256 957614ef581b7dab…

MALICIOUS

PDF

72.4 KB Created: 2020-11-25 03:46:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 34b04e0ba5561e864f52bd3865a4f8ad SHA-1: dbd9a0a4a919c2bc971d904f46a8ff34ba87cbd0 SHA-256: 957614ef581b7dab77d24bb52b1dba810890b2ae5e48521931b6e0f25b97d26f
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical finding for a PDF link farm. The embedded URLs and the document's structure suggest an attempt to redirect users to potentially malicious or SEO-manipulated content. While no scripts were explicitly extracted, the PDF format itself can embed JavaScript, and the overall behavior points towards a phishing or redirection scheme.

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/strik?utm_term=15+gallon+sprayer+parts PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367927/normal_5fb5db5ced5db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426062/normal_5fbb21cc2fcd1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412591/normal_5fa467cf7e7b4.pdfIn PDF document text
    • https://badadivuzadan.weebly.com/uploads/1/3/4/5/134523039/b730e7afdeb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460723/normal_5fbda2792de50.pdfIn PDF document text
    • https://guzugalaxob.weebly.com/uploads/1/3/4/7/134767263/8718243.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/zinudipir/kelunagunebaweguwewoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c9f40bb-8e15-465c-946d-0f1668484156/javesakimotowelilewibeg.pdfIn PDF document text
    • https://s3.amazonaws.com/fajujiju/84987607871.pdfIn PDF document text
    • https://s3.amazonaws.com/xufaxoferugod/wukupopifisunijijibaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22ea10e3-f6dd-4a23-a5aa-9073a0f5b5f7/dilolitufitujozodagus.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/cancer_de_prostata_scielo.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_off0000e081.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE081 5172 bytes
SHA-256: 49fb1b0aaf79ff499382bec5ab833adbcbdb4d8483f1aaadc8263af65b67ae4d
font_01_sfnt_off0000f238.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF238 10360 bytes
SHA-256: 09de37f0473f84e84d48acabe9a56013da2d51911acc63ae54a03c9ac0102318

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