Malicious PDF — malware analysis report

Static analysis result for SHA-256 536f29169891664f…

MALICIOUS

PDF

94.1 KB Created: 2020-10-03 07:16:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 20f375e285f2c411e7d091eb311a2b78 SHA-1: f01a8f4fbeeba188cb64839c4cdbcc693e7cd95d SHA-256: 536f29169891664f2dde69e3ed24f6d302f19f0500c1e10559d454244d494636
184 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to disposable hosting and redirect to known malicious infrastructure. The document body, though heavily obfuscated, appears to be a lure related to a movie script, likely intended to trick users into clicking the malicious links. The primary malicious URL identified is https://ggtraff.ru/pify?keyword=guardians+of+the+galaxy+2+script+pdf.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ggtraff.ru/pify?keyword=guardians+of+the+galaxy+2+script+pdf In PDF document text
    • http://biwexije.rubiesgirlsclubs.com/uploads/1/3/1/4/131437736/zazimoligewuz.pdfIn PDF document text
    • http://files.mysecondhandrose.com/uploads/1/3/1/4/131409597/kumurojixosakosuf.pdfIn PDF document text
    • http://giwedod.laocdb.com/uploads/1/3/1/4/131482916/jagewomum.pdfIn PDF document text
    • http://files.wyomingparkumc.com/uploads/1/3/0/9/130969199/b4116753296e9e0.pdfIn PDF document text
    • http://files.mariabazzi.com/uploads/1/3/1/4/131453294/kikaw_julipigex_savubojojinoziv.pdfIn PDF document text
    • http://zaxiro.audubonelementaryeagles.com/uploads/1/3/1/4/131408183/nakeje.pdfIn PDF document text
    • http://weperime.ministryincontext.com/uploads/1/3/1/3/131383839/suwagikukufa.pdfIn PDF document text
    • http://files.rosemaryrichings.com/uploads/1/3/1/3/131398360/segegatufemobek_gokurir_wukevivadi.pdfIn PDF document text
    • https://site-1036686.mozfiles.com/files/1036686/9514302111.pdfIn PDF document text
    • https://site-1038955.mozfiles.com/files/1038955/94284154546.pdfIn PDF document text
    • https://site-1039299.mozfiles.com/files/1039299/nezafotig.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/8d278baa-0c83-4533-b688-ef1c061afae7/puzegebumawexikobi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0641315b-fc44-4893-8b9c-bd8a70ed4ad9/kilokaguk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/100bebf6-fa1a-4a95-ba77-a4c42bfaebac/99817041099.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0681908b-0aed-4399-a612-b83aa698f276/59720191392.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f14ab6b0-e22f-4366-9df4-5943d69eb798/9965816937.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_off00013199.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13199 5748 bytes
SHA-256: 59c6ad3ee4248423ddd65ab891207e669bc75673da2642b0c33a9a94d613bee5
font_01_sfnt_off0001453f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1453F 10944 bytes
SHA-256: ae09276caa06ca9db13676a584971d0d0c4ffd2c04417047e7bae2e8d8107e07