PDF malware analysis — malicious · 45420ace0532b9d2

MALICIOUS

PDF

81.1 KB Created: 2021-05-20 19:54:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22

MD5: fdefaff79783fc7655724e526f5e5cb0 SHA-1: 2444067cf1afc386d3675e110f59b70b26b83b39 SHA-256: 45420ace0532b9d22ac3c1225abf9ce447e4d38dd8a3e6278c47b8925eccec20

214 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains numerous links to external websites, many of which are hosted on suspicious domains like 'dafemum.ru' and 'weebly.com'. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that at least one of these links points to known malicious redirector infrastructure. The presence of a large number of external links, as flagged by 'PDF_SEO_LINK_FARM', suggests an attempt to drive traffic to potentially harmful sites, likely for phishing or malware distribution. No scripts were extracted, but the document's structure and embedded links strongly indicate a phishing or malicious redirection attack.

Machine Learning

Nyx PDF Classifier malicious score 0.9993

Heuristics 5

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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.
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://dafemum.ru/strik?utm_term=how+to+write+a+nursing+care+plan+for+pneumonia In PDF document text
- https://rarifipive.weebly.com/uploads/1/3/4/1/134131304/5f1ab0.pdfIn PDF document text
- https://xapabareduvan.weebly.com/uploads/1/3/4/3/134395213/fivasuvesiripe.pdfIn PDF document text
- https://wenilitedosi.weebly.com/uploads/1/3/4/3/134315728/jixuwegesuja_pinerapu_zironudikod.pdfIn PDF document text
- https://zupalopozaguri.weebly.com/uploads/1/3/2/3/132302876/5404315.pdfIn PDF document text
- https://xibatelilon.weebly.com/uploads/1/3/1/6/131637149/d860c1d3a6a23.pdfIn PDF document text
- https://lijowuvum.weebly.com/uploads/1/3/4/6/134624244/mekemisu-rewema.pdfIn PDF document text
- https://finiruxadaral.weebly.com/uploads/1/3/2/6/132680938/2818737.pdfIn PDF document text
- https://wotopegajoxife.weebly.com/uploads/1/3/4/0/134042499/3680120.pdfIn PDF document text
- https://bupiwuzisulim.weebly.com/uploads/1/3/0/8/130874125/a6e1cf91a0e1452.pdfIn PDF document text
- https://wodirukuz.weebly.com/uploads/1/3/5/3/135398055/1205114.pdfIn PDF document text
- https://dudakodut.weebly.com/uploads/1/3/4/4/134497067/710806.pdfIn PDF document text
- https://rekepepijo.weebly.com/uploads/1/3/4/0/134018016/tepitemade_besinonisugun_tudekopexu.pdfIn PDF document text
- https://ledijonag.weebly.com/uploads/1/3/4/6/134689342/xewotekuw_vegigagikusafop_sagibuwezuzosat.pdfIn PDF document text
- https://tonikajolokoge.weebly.com/uploads/1/3/0/8/130874266/2b5b0.pdfIn PDF document text
- https://wirosumarot.weebly.com/uploads/1/3/1/3/131398493/wikuxunipozipukewive.pdfIn PDF document text
- https://rominekajamarol.weebly.com/uploads/1/3/4/0/134040464/nigadoku-felumemi-dutekukule-pofusideditu.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/fonazuzixagizir/dometic_fridge_not_working_on_gas_or_electric.pdfIn PDF document text
- https://s3.amazonaws.com/dukajevo/27356279174.pdfIn PDF document text
- https://s3.amazonaws.com/tokatefozude/3314547317.pdfIn PDF document text
- https://s3.amazonaws.com/sixolose/diwoveduti.pdfIn PDF document text
- https://s3.amazonaws.com/jotizifime/69872352881.pdfIn PDF document text
- https://s3.amazonaws.com/ruzumeb/62908628452.pdfIn PDF document text
- https://s3.amazonaws.com/wovitiku/windows_10_pro_fully_activated_free.pdfIn PDF document text
- https://s3.amazonaws.com/povelenavuviw/pretend_youre_xyzzy_servers.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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ff06.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFF06	5388 bytes
SHA-256: `b943485e399bb11fcc0d8f8a2fdd0753fd5e3ccd83bb287c38a03a8650327b3f`
`font_01_sfnt_off0001115c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1115C	10900 bytes
SHA-256: `a38623313ec69bd2c4181726d91a4eb1af45afa462507032a44548bfce511cdd`

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