PDF malware analysis — malicious · 202cfdffa4c5b9b3

MALICIOUS

PDF

51.6 KB Created: 2020-10-18 06:47:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26

MD5: dfd06f80a11366af2f59fed8f1955242 SHA-1: 6a0ceb55e8405a56e57a00106cc32678584bd18b SHA-256: 202cfdffa4c5b9b358c5073e3f10e7f8b08cab95689b761c437c22be4bbc3c98

184 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many of which point to disposable hosting and redirect to known malicious infrastructure. The ML classifier strongly indicated maliciousness, and the presence of a link to `ggtraff.ru` suggests a redirection chain designed to deliver a payload or phish for credentials. The document body contains text related to 'puzzle fighter 2 apk', indicating a lure for users seeking game downloads.

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/123?keyword=puzzle+fighter+2+apk In PDF document text
- https://pesajupamobe.weebly.com/uploads/1/3/1/6/131607203/840f11.pdfIn PDF document text
- https://fuparududewon.weebly.com/uploads/1/3/1/8/131856041/bd55ea4.pdfIn PDF document text
- https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/2091873.pdfIn PDF document text
- https://liwevapazu.weebly.com/uploads/1/3/1/0/131071299/sodaxil.pdfIn PDF document text
- https://segakimorepej.weebly.com/uploads/1/3/0/7/130738797/disurugajomubu.pdfIn PDF document text
- https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/8c3f11ed.pdfIn PDF document text
- https://gonoloxezejuje.weebly.com/uploads/1/3/1/4/131410007/2aeaed4.pdfIn PDF document text
- https://fekudumubaf.weebly.com/uploads/1/3/2/6/132681201/gozawu-kopabilawituso-kejovigonokola.pdfIn PDF document text
- https://rewemekekebaz.weebly.com/uploads/1/3/1/4/131406535/6168241.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365639/normal_5f8b116b25972.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368782/normal_5f89bbf54d260.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367277/normal_5f8aff997185e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368223/normal_5f8a9692191db.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366408/normal_5f8726b49e456.pdfIn PDF document text
- https://biwugina.weebly.com/uploads/1/3/1/1/131163984/nelelonasu.pdfIn PDF document text
- https://jezaxegare.weebly.com/uploads/1/3/1/3/131380636/cdd6cca78de46c.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://uploads.strikinglycdn.com/files/4932f89a-d143-4127-810a-9e2e85832b64/tomemirudurorogukafuvul.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1c2d9568-a42f-46fa-8cb4-aab8db99dceb/xifidezabazivalaseza.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d10414b9-f8e8-4f8f-8182-9a63b39c8d7d/82900460600.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1a08689a-edd4-4522-a3f5-4253a088efe5/25150683331.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e33200e9-4a80-4788-ab13-0f3ab57fa404/rosame.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006163.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6163	9040 bytes
SHA-256: `d086a1b56c5cf6b170a6e603014952db21b0d166c19d36f521df3bdb51128b5b`
`font_01_sfnt_off00007fa4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7FA4	4896 bytes
SHA-256: `beafd777640b90fbf8e8109ec3bee6450b309e13b3e6dd64c2316b3427d291a5`
`font_02_sfnt_off0000906a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x906A	10084 bytes
SHA-256: `977ce8721b0252c75fe92c11ef935dce0d71fd10d60d67d38a203e7c1b43db7b`
`font_03_sfnt_off0000b2d9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB2D9	4324 bytes
SHA-256: `05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176`

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