PDF malware analysis — malicious · 3d3740c3f69a4273

MALICIOUS

PDF

83.3 KB Created: 2021-02-22 20:59:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23

MD5: 201f968d765a68294892457059e406f2 SHA-1: 569b0662d5de4a4b660e24d37937758f2813f8ea SHA-256: 3d3740c3f69a427381bd690d49391e122dae5c408004582be514e5966ed1b684

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF file contains a large number of external links pointing to various PDF documents hosted on disposable domains, a common tactic for SEO manipulation or distributing malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URLs suggest a phishing or content distribution scheme, likely initiated via spearphishing.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

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://baarspo.ru/wix?keyword=launcher+plus+one+pro+apk PDF link annotation
- https://cdn-cms.f-static.net/uploads/4412999/normal_601dcb7d0eb1a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4417834/normal_601b69ec12369.pdfIn PDF document text
- https://gukepofefefika.weebly.com/uploads/1/3/1/4/131437977/deteki.pdfIn PDF document text
- https://cdn.sqhk.co/xarozowuzosa/gdAhjkz/21102130476.pdfIn PDF document text
- https://cdn.sqhk.co/zurefaxenov/hpjfjfO/golen.pdfIn PDF document text
- https://cdn.sqhk.co/vekokoze/j5zIyjc/80420008159.pdfIn PDF document text
- https://rifewageza.weebly.com/uploads/1/3/5/3/135349229/xudawaravupegim-bokefutimo-lufojokeri-bones.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4419206/normal_5fef416f64a82.pdfIn PDF document text
- https://bebojeraje.weebly.com/uploads/1/3/5/3/135302211/f67ed.pdfIn PDF document text
- https://fazodokivev.weebly.com/uploads/1/3/4/0/134018208/xuvonirelozonino.pdfIn PDF document text
- https://cdn.sqhk.co/depadukat/BMqgche/21990145260.pdfIn PDF document text
- https://nimekeboxiz.weebly.com/uploads/1/3/0/8/130873861/pimefasan.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4368760/normal_5ff858998fcc4.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4455642/normal_5fe128be7aedf.pdfIn PDF document text
- https://bexudedumazises.weebly.com/uploads/1/3/1/4/131406785/zufavefax-repira-wobapipozetoj-welimis.pdfIn PDF document text
- https://notesorujul.weebly.com/uploads/1/3/1/4/131407176/289558.pdfIn PDF document text
- https://ziwupaxibupava.weebly.com/uploads/1/3/4/3/134379030/7728290.pdfIn PDF document text
- https://ruwefenoref.weebly.com/uploads/1/3/0/7/130739117/saluwok-xilodogi-fopos.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000dc8a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDC8A	5028 bytes
SHA-256: `1245ce2cec61ac0b00171947431e3bb192508dde891dee0eee84172eaeada6e6`
`font_01_sfnt_off0000ed92.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xED92	2468 bytes
SHA-256: `e2c4bd44b03e950acc8b739c426831c27d59e78646ffb76a2129046b4903e497`
`font_02_sfnt_off0000f8c0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF8C0	15348 bytes
SHA-256: `b33773384b813281726a6ffb5d421c9d7ddac56ce870232feffb5889a77a0551`
`font_03_sfnt_off000128ac.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x128AC	16168 bytes
SHA-256: `8c1e3298cb301b6aa2c2aeff0a89e1cafee6626e56d5ffa98ad52a7598c40df9`

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