PDF malware analysis — malicious · 9996245b14a5edf5

MALICIOUS

PDF

53.7 KB Created: 2020-10-16 06:24:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22

MD5: e9050b5429627109b5610cf2d2f2d3f8 SHA-1: 552ed024b66c3792eb19251880a44c12b05a1397 SHA-256: 9996245b14a5edf597a274ed84bd9f83898fa136d10184e02ac99c8d14789d28

184 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, many of which point to disposable hosting and redirect to known malicious infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be a lure for 'Nova launcher android pie setup', suggesting a phishing or scam attempt. The ML classifier also strongly indicated maliciousness.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

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=nova+launcher+android+pie+setup In PDF document text
- https://cdn-cms.f-static.net/uploads/4367302/normal_5f879edd203bf.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4373259/normal_5f8901717b469.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369922/normal_5f88f41cf2bd4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365642/normal_5f870d05c5183.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366020/normal_5f87566ce0850.pdfIn PDF document text
- https://site-1040521.mozfiles.com/files/1040521/70725500675.pdfIn PDF document text
- https://site-1041846.mozfiles.com/files/1041846/46140087997.pdfIn PDF document text
- https://site-1038949.mozfiles.com/files/1038949/bumasupoxuvoriwobatusudim.pdfIn PDF document text
- https://site-1039896.mozfiles.com/files/1039896/jopixujurasoluzaxot.pdfIn PDF document text
- https://site-1038835.mozfiles.com/files/1038835/90462139164.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366040/normal_5f87f7e55ff0a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366389/normal_5f872adaa1e64.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366365/normal_5f87524f349e1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365662/normal_5f87039b32c14.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370055/normal_5f88d5106c55a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368969/normal_5f882b5f49ef5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365602/normal_5f87fbdb4025c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367621/normal_5f88f82d6951c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369626/normal_5f88fa2353001.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/1bbadff1-44ca-4a53-a56f-c3af39c0ec3a/91966763445.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ef3d0d47-d98b-4a66-879b-de124334564d/53621231188.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5e134761-d113-4a54-b6ac-f23f3e09f6b8/86744010588.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8c38523d-695e-4daa-8391-ebf87adac542/mezorawibomamasapirodag.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0486/3302/0584/files/notification_no._dnbs._193_dgvl-2007.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4541/2261/files/74859333144.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_off00007d57.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7D57	5188 bytes
SHA-256: `e8a6d07f31ebe1e14563f63e1643ee0271e2d0db969b52e878bf329a9fd60a6a`
`font_01_sfnt_off00008efa.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8EFA	10432 bytes
SHA-256: `d1e3b5298729e02b7002b25a7ef1e49da875d70b7efd83ad1fb51c04f4f8d733`
`font_02_sfnt_off0000b2de.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB2DE	16300 bytes
SHA-256: `f80d4dc375225a701a2879ffe119d009fefe72476edda23f53ffc28606f2e200`

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