PDF malware analysis — malicious · 2ab3489d06f14ae2

MALICIOUS

PDF

78.4 KB Created: 2021-01-25 14:01:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17

MD5: e3833268c9b9cacc3a5309f8198fdbf9 SHA-1: 04e6c972c4fbe3415d0a9362ff2fe3601ba7cd93 SHA-256: 2ab3489d06f14ae2fdf8da408d2820b350f0084b5c83323137d8f4562fb38c3e

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was identified as malicious by ClamAV and an ML classifier. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The embedded URL `https://trafficel.ru/aws?utm_term=company+holiday+party+invitation+template` indicates a lure related to a company holiday party invitation. No scripts were extracted, but the PDF structure and numerous external links point towards a phishing or malicious redirection attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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.
External URI info PDF_URI

PDF contains an external URL action
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://trafficel.ru/aws?utm_term=company+holiday+party+invitation+template PDF link annotation
- https://static.s123-cdn-static.com/uploads/4379387/normal_5feb2abac89f4.pdfIn PDF document text
- https://kumupesefutevun.weebly.com/uploads/1/3/4/4/134463509/30104637b.pdfIn PDF document text
- https://bipovubukixepev.weebly.com/uploads/1/3/2/7/132740720/nogibuw.pdfIn PDF document text
- http://navalny.design/harvest_market_champaign_sushi8ixjl.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4480585/normal_5fe8ab3502d1c.pdfIn PDF document text
- https://balixilime.weebly.com/uploads/1/3/1/3/131398392/vewan_rilaxotezigilol_dutagev_lerivusila.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4470385/normal_5ffc01570c505.pdfIn PDF document text
- http://arnautmebel.ru/62970319396k0ctk.pdfIn PDF document text
- https://cdn.sqhk.co/loboremetoxe/jbheQhg/vopudetavisol.pdfIn PDF document text
- https://cdn.sqhk.co/mobirewin/j4SjaCi/fasaxifotexo.pdfIn PDF document text
- https://dukazisilibe.weebly.com/uploads/1/3/4/6/134679988/vilasitulalopukag.pdfIn PDF document text
- https://cdn.sqhk.co/tiwefuxab/DolRfhh/map_of_uk_counties_and_main_cities.pdfIn PDF document text
- https://xobagosuwetir.weebly.com/uploads/1/3/2/6/132680986/vaburudakalebas.pdfIn PDF document text
- https://cdn.sqhk.co/rilixuzewiv/djghajd/pilot_near_me_going_south.pdfIn PDF document text
- https://xaxibilezulaf.weebly.com/uploads/1/3/4/0/134096047/ridakax.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4420438/normal_6007a454e45c2.pdfIn PDF document text
- https://lujegasot.weebly.com/uploads/1/3/0/9/130969173/votur.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4366400/normal_6006eb9e328f9.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
- 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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ea10.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEA10	4992 bytes
SHA-256: `f75cf86cfd650b2a6e500f8fd88c8ad0420cba31a7320c40b71dbd7f3c9f76b1`
`font_01_sfnt_off0000fada.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFADA	10196 bytes
SHA-256: `661117d21b76e03ec7c91997cf18b0d218196af441016a23db3de83bb43bb181`
`font_02_sfnt_off00011dbf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11DBF	4324 bytes
SHA-256: `1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e`

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