Malicious PDF — malware analysis report

Static analysis result for SHA-256 7505a929d064315c…

MALICIOUS

PDF

74.6 KB Created: 2021-03-18 19:40:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: db9b7a6a8dd6d10ad4f4ab7ec7c9edfe SHA-1: 4bfa0db8eb68b59ab081adc9eb498084f422fbc3 SHA-256: 7505a929d064315cadf067b153016efb352c44e0b3f6f2bceb2f88bb772ba82f
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a large number of external links, many hosted on disposable domains, indicating a link farm or phishing attempt. The embedded URL 'https://nipisod.ru/123?utm_term=m+c+d+full+form' is a primary indicator of malicious intent, likely leading to a malicious site or further payload. No scripts were extracted, but the PDF structure itself is designed to redirect users to external content.

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://nipisod.ru/123?utm_term=m+c+d+full+form PDF link annotation
    • https://zorovapi.weebly.com/uploads/1/3/2/3/132303286/xafizanobifa.pdfIn PDF document text
    • https://xavidupi.weebly.com/uploads/1/3/4/7/134723560/bupenujuxukuwisibodi.pdfIn PDF document text
    • https://junetinovifadi.weebly.com/uploads/1/3/0/9/130968968/nitigolefor-sipoluwujes.pdfIn PDF document text
    • http://oneplusonemain.xyz/what_is_the_meaning_of_the_tree_of_life_necklacejd9xr.pdfIn PDF document text
    • https://pusuranan.weebly.com/uploads/1/3/4/5/134598414/f11c94.pdfIn PDF document text
    • https://bujasosepamus.weebly.com/uploads/1/3/4/6/134626994/xosisapaxos.pdfIn PDF document text
    • https://disezoken.weebly.com/uploads/1/3/5/3/135327633/turomudejefilakuf.pdfIn PDF document text
    • https://wilowukodol.weebly.com/uploads/1/3/4/8/134881933/4808d.pdfIn PDF document text
    • https://xorizetevapaze.weebly.com/uploads/1/3/1/4/131438163/06b91fdd43df2.pdfIn PDF document text
    • http://axacheat4.xyz/cartoons_in_englishgscib.pdfIn PDF document text
    • http://talakam.space/9046101873678zb9.pdfIn PDF document text
    • http://national-verifyteam.com/85549938153z6wzq.pdfIn PDF document text
    • https://vekafikag.weebly.com/uploads/1/3/5/9/135986004/jizaza.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/365d3a11-c576-4980-bfc4-34c106c7d8d6/washington_football_team_2021_mock_drafts.pdfIn PDF document text
    • https://9de673a2-3b8e-40eb-bbf5-c0ad8e71a3da.filesusr.com/ugd/bd5c68_a2a2ae52b203404aa87841e2e167b198.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1accd104-4080-466e-871a-72dfa9f1c995/what_is_the_hunger_games_catching_fire_book_about.pdfIn PDF document text
    • https://ba789de2-c385-43ee-b32d-a34c698d1993.filesusr.com/ugd/b7082a_4e2e8510c0194083a0517efb2f9ab2d4.pdf?index=trueIn 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_off0000e808.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE808 4784 bytes
SHA-256: 7f8de1165a891d6070fa92d2055fa47b398726fd9ea2abaa24124be9b5e5bd83
font_01_sfnt_off0000f845.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF845 10980 bytes
SHA-256: 62999ea83a84aaf6d5f58ee4c61f759fd4a7e08e143e42429458f5f124612f6b

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