Malicious PDF — malware analysis report

Static analysis result for SHA-256 09a458077eb02c2a…

MALICIOUS

PDF

92.9 KB Created: 2021-03-30 18:02:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 886e455c1a9f2d7c390b65bcff72230d SHA-1: 691362083d6688b33b94587d0155b031c48a644a SHA-256: 09a458077eb02c2ae34d58137db72b9f924be00939c55ea53e19b25867dcae4b
126 Risk Score

Malware Insights

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

The PDF contains numerous external URIs and is flagged as a link farm on disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were extracted, the presence of multiple suspicious URLs points towards an attack pattern involving directing users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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://xezojetit.ru/123?utm_term=reading+answers+of+ambergris+sown+in+dishonor PDF link annotation
    • http://melowimaz.getenjoyment.net/axis_bank_net_banking.pdfIn PDF document text
    • http://walolexokesufa.sportsontheweb.net/is_m5_faster_than_m3.pdfIn PDF document text
    • https://gudaxukusakirip.weebly.com/uploads/1/3/4/0/134096244/809decaed1ee.pdfIn PDF document text
    • https://bovikobugekut.weebly.com/uploads/1/3/0/7/130775803/dalanujusot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489056/normal_60200caede196.pdfIn PDF document text
    • http://mekapidi.medianewsonline.com/12505010546.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475859/normal_5fcc564f70bdb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pimobepetokonud.myartsonline.com/what_if_movie_2010_trailer.pdfIn PDF document text
    • https://21a67f6d-2aea-439f-a910-ed4feb6be009.filesusr.com/ugd/173616_55ec5c1ac4f746c0807ac612ae1d5209.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/deb28bed-7c56-4219-8b43-a9fdc57e3c25/how_to_develop_rom_for_android_phone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b648d67-67a9-4561-a6b6-2f5faf2d151d/47900602088.pdfIn PDF document text
    • https://3ea853e4-7f2b-4fb0-9229-b04907a1e321.filesusr.com/ugd/d94095_5a567764d2aa44518558d19269ca6655.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb9f2c3b-59be-4e56-9395-a6f930fd7e96/does_costco_do_photo_books.pdfIn PDF document text
    • http://bitujiduruv.myartsonline.com/61147745791.pdfIn PDF document text
    • http://wulibazosuxib.onlinewebshop.net/63765536771.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_off0001222c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1222C 3104 bytes
SHA-256: f10ac6f0a1807b1052a9dd5c2156036117e7b0baebe7c819e10a3f39227089a5
font_01_sfnt_off00012d4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D4D 5528 bytes
SHA-256: 719c384060e2763d49df93da111ece2c84ab561db55e7f754a571cd7d05e1d37
font_02_sfnt_off00014006.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14006 11252 bytes
SHA-256: 33cb81c4c3e4642bdb78936cf3f11a2b6ba08ca6e25df772de736f92db42a211

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