Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b0ddcd1fec60d10…

MALICIOUS

PDF

110.6 KB Created: 2021-03-24 12:05:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 0d5d62222ef234e451ef46ab18cf50d5 SHA-1: 03714a4d4ccd2677757557f8b758734ece57228f SHA-256: 2b0ddcd1fec60d10aeb20954b518227d8112368d66f122a9d937fb7a43ef180e
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV detecting it as Pdf.Phishing.Trojan. The file contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO manipulation tactic. While no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of malicious intent, potentially leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://ponafet.ru/wix?keyword=kumkum+bhagya+9th+may+2017 PDF link annotation
    • http://uablog.site/daweluzidubobemulizirazovjq3h.pdfIn PDF document text
    • http://mazisim.mywebcommunity.org/jabotaxepoxon.pdfIn PDF document text
    • http://jewogipuwivi.medianewsonline.com/whale_done_stampin_up_cards.pdfIn PDF document text
    • https://burevojaziji.weebly.com/uploads/1/3/4/7/134729690/bf1efef.pdfIn PDF document text
    • http://arm-watch3.club/mosotelenuzupaxuklsr6y.pdfIn PDF document text
    • http://goligofalu.medianewsonline.com/88884012367.pdfIn PDF document text
    • https://fujepibipaxider.weebly.com/uploads/1/3/1/0/131070521/fibumiwixu.pdfIn PDF document text
    • https://molisemopum.weebly.com/uploads/1/3/1/4/131437834/vagetek_vuzobedofote_kifaligewiwako.pdfIn PDF document text
    • https://wipigoxexidon.weebly.com/uploads/1/3/2/6/132682030/7322120.pdfIn PDF document text
    • http://fagumawegoleleb.mypressonline.com/fedirewum.pdfIn PDF document text
    • https://ruvawuwejijexut.weebly.com/uploads/1/3/0/8/130814193/7a3427.pdfIn PDF document text
    • https://paguvobidelovug.weebly.com/uploads/1/3/2/8/132815355/jaridewe.pdfIn PDF document text
    • https://wojagezut.weebly.com/uploads/1/3/0/7/130775605/21d25949ed7b0.pdfIn PDF document text
    • https://tuledekubixa.weebly.com/uploads/1/3/4/7/134722649/6141676.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/1d2685a4-01b2-4a61-9349-52aaed760467/67805098093.pdfIn PDF document text
    • https://367e539a-c541-4439-991c-4bf2bef2aa7a.filesusr.com/ugd/77d535_59204427fbc446de85494d6749b429e3.pdf?index=trueIn PDF document text
    • https://9afb1793-bc57-4514-bb46-74e980466609.filesusr.com/ugd/11f207_40cbd0c2c5a54eab9656480d147d6aaa.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/db57c577-09b2-4122-856c-76262d87e683/baloxozobil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f913cb71-1ae8-4376-b2ae-38dc6413d94c/fabric_of_the_cosmos_the_illusion_of_time_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa09e4c1-cdad-43c2-9e94-1aa8a5d8f4e0/the_black_prince_full_movie_download_okpunjab.pdfIn PDF document text
    • https://fecd0c08-032d-4b8b-b26c-6108aca7a00f.filesusr.com/ugd/a87c8b_43db5bb9bdc142dc9870138dca1cceaf.pdf?index=trueIn PDF document text
    • http://zutugidod.onlinewebshop.net/que_es_la_introduccion_de_un_trabajo_escrito_ejemplo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54ff9392-a140-4ab8-83b1-adfe77075a14/lizolikemagotamokow.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016b41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16B41 5128 bytes
SHA-256: 10fa19154ddec2ad9717a71247f7ef19650c71ff61df1fbf2137b9d2d912ba70
font_01_sfnt_off00017cca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17CCA 10004 bytes
SHA-256: 98ff8850ea06530bcb61b5a5d5e6a530290ee11b1f6317d1bffa2a5b2c4ff3d7
font_02_sfnt_off00019eb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19EB1 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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