PDF malware analysis — malicious · 1fd46d5d27f48c9c

MALICIOUS

PDF

73.0 KB Created: 2021-02-27 08:46:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24

MD5: 14b19a20c6f850b414ca13fef100fb69 SHA-1: e42211078ee5a5e4a8eaedc89b303b8323981740 SHA-256: 1fd46d5d27f48c9c507002ac6707f77f3a07c8c6312e208fe50c0265e8a39a26

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and numerous external links point towards a malicious document designed to redirect users to potentially harmful websites.

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://midufefew.ru/strik?utm_term=manufacturing+company+business+plan PDF link annotation
- https://cdn.sqhk.co/rowazazapa/eJgVigV/highway_to_hell_movie_review.pdfIn PDF document text
- https://zolowokixo.weebly.com/uploads/1/3/0/7/130738875/zufibabozobabif.pdfIn PDF document text
- https://jebezijako.weebly.com/uploads/1/3/5/9/135964749/212076.pdfIn PDF document text
- http://nout-prodat.site/how_to_adjust_condor_air_compressor_pressure_switchqhaar.pdfIn PDF document text
- https://cdn.sqhk.co/vidujubotaf/yicljf5/dukeruruliwusovoxobajor.pdfIn PDF document text
- https://cdn.sqhk.co/wezupobuwab/jbNcjIi/52355882690.pdfIn PDF document text
- https://tobotegitemusir.weebly.com/uploads/1/3/4/6/134651307/zutunelo.pdfIn PDF document text
- https://pidakulosa.weebly.com/uploads/1/3/4/3/134391257/favak.pdfIn PDF document text
- https://lajutiruwogow.weebly.com/uploads/1/3/4/5/134585316/9378780.pdfIn PDF document text
- https://roxobirunuj.weebly.com/uploads/1/3/4/0/134096027/71332b355fa5c0.pdfIn PDF document text
- http://fc-aromat.ru/toxina_a_y_b_de_clostridium_difficile1vlg8.pdfIn PDF document text
- https://zifofuxe.weebly.com/uploads/1/3/5/3/135386801/dinuf.pdfIn PDF document text
- https://gokebapin.weebly.com/uploads/1/3/5/3/135320588/cee834c.pdfIn PDF document text
- https://dofikusoru.weebly.com/uploads/1/3/4/4/134472045/5784820d1f4fa.pdfIn PDF document text
- http://vquest.website/doselomu297w5.pdfIn PDF document text
- https://suranekiwexem.weebly.com/uploads/1/3/4/6/134698667/8694966.pdfIn PDF document text
- https://titepusigob.weebly.com/uploads/1/3/5/3/135392267/pigifoperunedi_kituzo_bukibaroxa_mudosazikub.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://s3.amazonaws.com/juzinaramip/cisco_sg350-_28mp_datasheet.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d354.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD354	5464 bytes
SHA-256: `c9e441c281ff50be496281431e1075693b24921a3daecedc879e59d011e5a36e`
`font_01_sfnt_off0000e5db.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE5DB	10312 bytes
SHA-256: `769d3f0264cd6e23e113a5613a03909b702028e7210cc52cf809b1a5b9af19e2`
`font_02_sfnt_off0001090b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1090B	4324 bytes
SHA-256: `1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e`

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