PDF malware analysis — malicious · b8164a643ecc4d78

MALICIOUS

PDF

51.7 KB Created: 2020-10-09 08:22:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15

MD5: ba66c920a219f0b01fbfb11a2b200f52 SHA-1: efc59e38b8f61a6a907fc3d0dda82d5fbf918d6e SHA-256: b8164a643ecc4d7859a2a320744fe0405b537533f264ebd6c736c63b0bdaaba7

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://ggtraff.ru/strik?keyword=biochemistry+basics+pogil+answers+pdf In PDF document text
- https://site-1038472.mozfiles.com/files/1038472/nijunulejaxifakewapu.pdfIn PDF document text
- https://site-1037026.mozfiles.com/files/1037026/92651213693.pdfIn PDF document text
- https://site-1039950.mozfiles.com/files/1039950/tufakupefitututol.pdfIn PDF document text
- https://site-1038982.mozfiles.com/files/1038982/56873119180.pdfIn PDF document text
- https://site-1037115.mozfiles.com/files/1037115/71967592566.pdfIn PDF document text
- https://site-1039631.mozfiles.com/files/1039631/63225101553.pdfIn PDF document text
- https://site-1043446.mozfiles.com/files/1043446/wezizule.pdfIn PDF document text
- https://site-1042095.mozfiles.com/files/1042095/nugowuriparufe.pdfIn PDF document text
- http://dapiva.msmillyard.com/uploads/1/3/0/7/130776299/880b672bf7c93.pdfIn PDF document text
- http://files.trumpsgreatamericafacts.com/uploads/1/3/0/7/130738806/rivuzu-jopipaj-jetutejexer.pdfIn PDF document text
- http://fanax.glogodsloveonly.com/uploads/1/3/2/6/132695535/8763986.pdfIn PDF document text
- http://kesemawiw.chubbymermaidart.com/uploads/1/3/1/1/131163507/927964.pdfIn PDF document text
- http://files.companychowfoodjunkies.net/uploads/1/3/1/3/131398292/xopixivakor.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/5806f9e2-afb6-4056-b0af-15d31b192fa2/56328785222.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1f5b2503-144a-410e-94ac-66a7de10bc64/juvamilumupasaxitaremego.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/96e9b315-07ad-468a-91cc-e6d0ae042db0/64536703989.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d6e68b95-fd89-4cfb-bd2d-c92ae500eb51/31903032371.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/eae3f388-08a3-4c13-acf1-eb9f3c0ccad5/23048677085.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00007353.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7353	5952 bytes
SHA-256: `c84377c5863ffa813d35a2d13b97ad2b6b3f4a1bf8bfcff371b08c2f1595c18c`
`font_01_sfnt_off00008782.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8782	10528 bytes
SHA-256: `94939a1f5f1df2369dff35c26a24f4a1c80df46a9db5c26d3e310d260bf8657e`
`font_02_sfnt_off0000abb8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xABB8	16188 bytes
SHA-256: `ac331ff209e496a545000daa6c22a418664ce8bb09dd9fd1314a38219ce2e6a2`

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