Malicious PDF — malware analysis report

Static analysis result for SHA-256 430134e4aa518dc9…

MALICIOUS

PDF

66.1 KB Created: 2020-10-06 15:27:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2d3a2a2c6a7d397f1b51dce710664932 SHA-1: e1cc281ae5a0a0f9ed0d566e0465a2d693864871 SHA-256: 430134e4aa518dc989157ed2ae7c18047928ebe1a616f09628de74b3fc93a8bc
184 Risk Score

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://cctraff.ru/pify?keyword=that+time+i+got+reincarnated+as+a+slime+light+novel+pdf+volume+10 In PDF document text
    • http://files.northernpath.com/uploads/1/3/0/8/130814245/berabox.pdfIn PDF document text
    • http://files.peakcombustion.com/uploads/1/3/0/8/130813786/duzedoj.pdfIn PDF document text
    • http://gurigu.katherineinezmesa.com/uploads/1/3/1/6/131636826/9144126.pdfIn PDF document text
    • http://zukarese.summervillepsychiatric.com/uploads/1/3/1/4/131406062/7bda4b5fd.pdfIn PDF document text
    • http://files.momentsinthepark.com/uploads/1/3/2/6/132681969/bifizoneb-dorutemaluvefav.pdfIn PDF document text
    • https://site-1036681.mozfiles.com/files/1036681/17550550741.pdfIn PDF document text
    • https://site-1036871.mozfiles.com/files/1036871/giwixigo.pdfIn PDF document text
    • https://site-1039846.mozfiles.com/files/1039846/51825634320.pdfIn PDF document text
    • https://site-1037143.mozfiles.com/files/1037143/purafiwelezeriloxozazigid.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/0807e7de-40f5-4f0e-a169-9fead0a27937/bidibabunisokewuwuvixakon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/284478f6-09c3-421d-8fe5-cdc9bc394564/74860039604.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40f15676-b732-48d4-b702-52681682a3ce/napalubajutopajedukawot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96f06bed-2a98-4d19-918c-e4277f636676/35360553627.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009638.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9638 6680 bytes
SHA-256: c5f7e0bc87954c8c29e33823ee95ee17ccd8743f332bfbc0f8ed359f9f950537
font_01_sfnt_off0000ace1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACE1 5772 bytes
SHA-256: 52d6124710ace5df72dc9de3046881fac23a7a188a54702ffc9071ffde3e0bd8
font_02_sfnt_off0000c066.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC066 10724 bytes
SHA-256: 6057fb5ad51358edba1ef010e2102a18fea6e62fb9c81755df90bbac8f610229
font_03_sfnt_off0000e523.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE523 16144 bytes
SHA-256: 0ac7c3374b05c7f503ea1e1306be6d1b38d4f84cef18590183456b3168b0763b

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