Malicious PDF — malware analysis report

Static analysis result for SHA-256 44a2c4adbd2b6dc8…

MALICIOUS

PDF

77.1 KB Created: 2021-02-28 10:20:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c0a1a2d819da842f31129ed0bf68b6ff SHA-1: c15a54c9191449cbee0d3d0573a91624bc872213 SHA-256: 44a2c4adbd2b6dc82e770df4e8c303a7c44e65e1bd4b3698e1581aa7ead91666
186 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://jottigo.ru/wix?keyword=snow+village+jefferson+school PDF link annotation
    • https://xowarumi.weebly.com/uploads/1/3/4/5/134519529/mumasere_loziw_xudiwa.pdfIn PDF document text
    • https://vasinurevesodux.weebly.com/uploads/1/3/4/6/134605286/8b8aec03cd.pdfIn PDF document text
    • https://lupudeme.weebly.com/uploads/1/3/1/3/131378919/1f98e24.pdfIn PDF document text
    • https://gakulenem.weebly.com/uploads/1/3/1/4/131437742/02a86fbcf57f.pdfIn PDF document text
    • https://xopusinad.weebly.com/uploads/1/3/1/4/131406491/bonoxafuditojir_xupexuzed.pdfIn PDF document text
    • http://peluxuba.sportsontheweb.net/how_do_i_charge_an_old_ipod_shuffle.pdfIn PDF document text
    • http://galosidijixiwu.mypressonline.com/81813323385.pdfIn PDF document text
    • http://idealica-italiaufficiale.site/laboratory_investigations_4th_edition_clark_answerswl6vk.pdfIn PDF document text
    • http://losqutoq.online/pennsylvania_answer_to_complaint_samplezx1me.pdfIn PDF document text
    • https://mikexilip.weebly.com/uploads/1/3/4/8/134868220/fadarezogikofaso.pdfIn PDF document text
    • https://bisimopax.weebly.com/uploads/1/3/0/8/130814127/aec16a.pdfIn PDF document text
    • https://bikugepoxo.weebly.com/uploads/1/3/5/3/135351236/fikorajujugej_gibexuledux.pdfIn PDF document text
    • https://tukuboxux.weebly.com/uploads/1/3/4/5/134510407/jazinu.pdfIn PDF document text
    • https://zuveravovizopow.weebly.com/uploads/1/3/0/9/130969477/4470203.pdfIn PDF document text
    • https://vakinora.weebly.com/uploads/1/3/1/8/131857586/tifesaxazizel-futobebetup-zuxigojepu-zijuneniruv.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://s3.amazonaws.com/ditiruz/13542104497.pdfIn PDF document text
    • http://faleferesevo.onlinewebshop.net/samsung_c460_series_waste_toner_container.pdfIn PDF document text
    • http://mawokale.myartsonline.com/80460141042.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_off0000e42a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE42A 5184 bytes
SHA-256: 53295d0cadb49b79a4d3c41cdf702cc1243ab59de6d2dd69a5cc9ffde79f917c
font_01_sfnt_off0000f5d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5D0 10412 bytes
SHA-256: 2e9cb5e96f8fadda12d73ba172440e7bf5c345bac47b37fb8f086814e5b4bdc3
font_02_sfnt_off0001197b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1197B 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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