PDF malware analysis — malicious · e75e704601c5a51c

MALICIOUS

PDF

77.1 KB Created: 2021-02-19 03:18:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20

MD5: 92d9b39ad9f75fa1951af3bbec2be985 SHA-1: b74b1b7eceb1946f4028ae3d0c11f6d3ec2c899b SHA-256: e75e704601c5a51c49596f8759fddedfce0774a70518ab0d366eb0ed6b2a01d9

244 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file exhibits characteristics of a phishing or malware distribution lure. It contains a large number of links, many pointing to disposable domains and potentially malicious redirectors, suggesting a link farm designed to distribute malware or phish for credentials. The embedded URLs and the heuristic firings strongly indicate malicious intent, likely related to distributing further payloads or leading users to fraudulent sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://yafferge.ru/123?utm_term=dell+optiplex+780+video+controller+drivers In PDF document text
- https://cdn.sqhk.co/genopeno/cjaEigO/watch_live_nfl_thursday_night_football.pdfIn PDF document text
- https://fuwipinax.weebly.com/uploads/1/3/4/0/134016709/metesilegekubop_zizizobisunakuw.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4472186/normal_60223d7e632ad.pdfIn PDF document text
- http://bilabugova.iblogger.org/fikurabupavumaferuso.pdfIn PDF document text
- https://gexipatar.weebly.com/uploads/1/3/1/6/131606255/zodisebinazu.pdfIn PDF document text
- https://mubafuzolifuben.weebly.com/uploads/1/3/4/6/134644730/fbc36d86aa72ec.pdfIn PDF document text
- https://fekawuzode.weebly.com/uploads/1/3/5/9/135993312/zunotusuv_besilika_zisibadopule.pdfIn PDF document text
- https://mogomanazeveka.weebly.com/uploads/1/3/0/9/130969503/votivomowupurun_jukekikimurunar_gawuf_topox.pdfIn PDF document text
- https://kakifimetuwojo.weebly.com/uploads/1/3/4/3/134317364/kazexofukene.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4408324/normal_601130d3e7275.pdfIn PDF document text
- https://mitojebani.weebly.com/uploads/1/3/2/7/132711961/fimunebarufuzugot.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4499958/normal_5fd322f254aeb.pdfIn PDF document text
- https://kodetinerimaguw.weebly.com/uploads/1/3/5/3/135347088/bavezaraz.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4468819/normal_602ab39558d06.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4403129/normal_5ffcbe305b957.pdfIn PDF document text
- https://cdn.sqhk.co/pojuwudedi/iijjpGl/does_vlc_for_android_support_chromecast.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4485579/normal_5fdc99faa916f.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_off0000e1b9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE1B9	5188 bytes
SHA-256: `0c2692b21f906ec1c68411642bc6c089042bd77f42b8b73a97ad4fd47806ad61`
`font_01_sfnt_off0000f37a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF37A	11464 bytes
SHA-256: `70f951327b60971dd5bbe900f5d0af4e17e265f5f99a6c0cee56f6607373432a`
`font_02_sfnt_off0001189e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1189E	4324 bytes
SHA-256: `1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e`

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