Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b6d1081d824e1bc…

MALICIOUS

PDF

84.1 KB Created: 2021-03-05 10:27:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 6ecc37c32069807be6b0596d5d43e14d SHA-1: 99a050aa328e2e87741dc6e04a63a1745690637c SHA-256: 3b6d1081d824e1bc3a813007dae27f5aa5450ca96120127574ca74f522b75a35
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://resalured.ru/award?keyword=harga+mixer+behringer+xenyx+qx+1202+usb PDF link annotation
    • https://nevomunetis.weebly.com/uploads/1/3/0/7/130740414/79b62bda2ef359.pdfIn PDF document text
    • https://xobuwepowitapim.weebly.com/uploads/1/3/0/7/130775805/xifabebudisadof_duxeg_kuxejusud.pdfIn PDF document text
    • http://movilatur.iblogger.org/44012107960.pdfIn PDF document text
    • http://wonder-ita.fun/melody_love_is_in_the_earthhkyhp.pdfIn PDF document text
    • https://mavitebe.weebly.com/uploads/1/3/1/1/131163983/todaw-mefugupigosir-xuxeb-wanan.pdfIn PDF document text
    • https://paxolobiwoke.weebly.com/uploads/1/3/1/1/131163878/ed19ca8.pdfIn PDF document text
    • https://gujukajiw.weebly.com/uploads/1/3/1/4/131437807/b2c2691b032.pdfIn PDF document text
    • http://grenkasalo4.xyz/725131013775h3hp.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://9d50af6f-dbf7-41ba-b854-83985329a12b.filesusr.com/ugd/33c377_d0a8c629d0d849a19948e0bd30019bf7.pdf?index=trueIn PDF document text
    • https://68f06c25-eb64-4e0a-94e3-a0e33e610147.filesusr.com/ugd/463ace_c3832de072af4caa992ee9e081e693d2.pdf?index=trueIn PDF document text
    • https://01dc7cc6-b8ed-446e-8cc8-1ad78882ed38.filesusr.com/ugd/e23fbb_080fb4c33fb04abaad61e447d681d155.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/07e01eea-5f30-49a3-b891-b98aa1c09ac4/66933831769.pdfIn PDF document text
    • https://1a6c606f-1efd-495f-9370-57f425d809fd.filesusr.com/ugd/1be480_b838a6cd39144937a5c6db9e5828d3f0.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e23c26f1-a753-48ad-9795-0fe5b58f05d9/a_clash_of_kings_chapter_page_numbers.pdfIn PDF document text
    • http://porumujowupof.epizy.com/zejodorakupagonusalub.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_off00010acb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ACB 5788 bytes
SHA-256: 1a4714a9f1d1d2e6846e7346772e6eabcf91ca6651fe6c15d6de795cc15b69ad
font_01_sfnt_off00011e63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E63 10976 bytes
SHA-256: 3a38eb8fbad65266c20281568ae2fcf9bd7e53832547944e49701549c71d2ebc

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