Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ac6eac30db429ea…

MALICIOUS

PDF

47.5 KB Created: 2020-03-16 12:27:12 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-04
MD5: bdbbae86cff17cae98fa3dd80c0fc6f1 SHA-1: 6bb7e5daf82adeeedafa8530b371435bdb84a6ab SHA-256: 9ac6eac30db429ea40ac0bc6f6629e17ca1290084d6ab3e9dd3625df2bb7e68b
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though heavily obfuscated, contains references to URLs that are also present in the list of external links. This suggests a tactic to drive traffic to a large number of unrelated PDF files, potentially for SEO manipulation or to host malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 http://rv1.voyagerwebsites.com/uploads/1/3/0/6/130604154/130604154.html#accounting+information+system+romney+terjemahan PDF link annotation
    • http://blindsparadise.net/uploads/1/3/0/7/130738876/zafukorewut_pagolojotiwala_dinetazukatok_numetu.pdfIn PDF document text
    • http://thechrisjohnsononline.com/uploads/1/3/0/8/130814056/1029447.pdfIn PDF document text
    • http://www.gladiatorfs.com/uploads/1/3/0/4/130477566/982491.pdfIn PDF document text
    • http://midlandsallstar.com/uploads/1/3/0/5/130589339/2562c.pdfIn PDF document text
    • http://www.rubycellar.com/uploads/1/3/0/8/130813369/b53c536f.pdfIn PDF document text
    • http://www.mads.com.co/uploads/1/3/0/8/130813030/3823998.pdfIn PDF document text
    • http://www.jordanridgesauces.com/uploads/1/3/0/4/130477026/3507560.pdfIn PDF document text
    • http://pinnaclepersistence.com/uploads/1/3/0/6/130639810/4831164.pdfIn PDF document text
    • http://www.contemporary-flair.com/uploads/1/3/0/3/130323968/jowobuwon.pdfIn PDF document text
    • http://timorlawyer.com/uploads/1/3/0/7/130739399/8245251.pdfIn PDF document text
    • http://jaguartracks.com/uploads/1/3/0/4/130475923/fonofabojiz.pdfIn PDF document text
    • http://mx0.borderli.ch/uploads/1/3/0/7/130776434/2202509.pdfIn PDF document text
    • http://www.zermat.us/uploads/1/3/0/8/130813134/pizot.pdfIn PDF document text
    • http://alaskazonaadventures.com/uploads/1/3/0/3/130324331/9241774.pdfIn PDF document text
    • http://nlightnstudio.com/uploads/1/3/0/7/130776043/bumefik_jadodal_voxokejom_tanafexakelun.pdfIn PDF document text
    • http://www.exploring-wilderness.com/uploads/1/3/0/8/130874050/8051989.pdfIn PDF document text
    • http://desatascosmolletdelvalles.com/uploads/1/3/0/5/130550841/tupurifowup.pdfIn PDF document text
    • http://ashtangayogaantwerpen.com/uploads/1/3/0/3/130323377/dixetumegijig.pdfIn PDF document text
    • http://fotoprofissional.com/uploads/1/3/0/8/130874136/57681.pdfIn PDF document text
    • http://postmaster.gigi-jewelry.com/uploads/1/3/0/6/130604320/ec9e49260408.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

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008ff1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FF1 8412 bytes
SHA-256: be206f995db330fa2e31a7488bfb0e3cb084955122e2937fcf5f3fe78ccf6c56

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