PDF malware analysis — malicious · a4354e56aea3a76a

MALICIOUS

PDF

83.7 KB Created: 2021-03-18 10:01:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02

MD5: 76eb70c5648c460a78ac590d214c4892 SHA-1: 1326547059a6a299b5fb16b92a062dfe6440829f SHA-256: a4354e56aea3a76af533b6741371c6af36fbb7d1d2d461c76dc6db8cf3222baa

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a significant number of external links, identified as a PDF link farm, suggesting a malicious intent to redirect users to potentially harmful websites. The ClamAV detection and ML classifier further support its malicious nature, classifying it as a phishing trojan. Although no scripts were directly extracted, the presence of numerous external URLs indicates a likely attempt to download or redirect to malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9954

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
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.
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://botokaw.ru/strik?utm_term=the+law+of+success+in+sixteen+lessons+by+napoleon+hill+audiobook PDF link annotation
- https://cdn.sqhk.co/jozojonujaj/d3Y6Sif/simoku.pdfIn PDF document text
- https://gurelupukuji.weebly.com/uploads/1/3/0/7/130775622/7a0b1a6.pdfIn PDF document text
- https://cdn.sqhk.co/gafebujeb/drbihii/35932648684.pdfIn PDF document text
- http://bajifepeselok.sportsontheweb.net/tadisobepoluwa.pdfIn PDF document text
- https://cdn.sqhk.co/nugofonavuf/pjizLie/itopride_cardiac_side_effects.pdfIn PDF document text
- http://vurovolapoza.mygamesonline.org/how_to_use_trx_exercise_bands.pdfIn PDF document text
- https://takadoturig.weebly.com/uploads/1/3/4/1/134108809/lerolaxidu_wuminagibi_xewixim_fugarelikado.pdfIn PDF document text
- https://rosofofupamufi.weebly.com/uploads/1/3/4/3/134364257/93906a077b3.pdfIn PDF document text
- https://pepigapipewoma.weebly.com/uploads/1/3/4/0/134000130/e617bcab.pdfIn PDF document text
- http://punejew.mygamesonline.org/junabejadusufupin.pdfIn PDF document text
- https://cdn.sqhk.co/daborofus/cifgje7/lubusipekozemesixorela.pdfIn PDF document text
- http://zumepaposakuf.scienceontheweb.net/stevens_320_field_slug_barrel.pdfIn PDF document text
- http://midikakuvekume.mywebcommunity.org/tamenaturaxitilase.pdfIn PDF document text
- https://bajusokizuz.weebly.com/uploads/1/3/4/4/134400974/8d7a232.pdfIn PDF document text
- http://kejoxemubogese.mywebcommunity.org/how_to_design_and_evaluate_research_in_education_7th_edition.pdfIn PDF document text
- http://vazagitomis.mypressonline.com/atresia_esofagica_tipo_1.pdfIn PDF document text
- http://papawugamajube.mygamesonline.org/vewefekewosezapiso.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/patilawasu/no_loss_binary_option_indicator_free.pdfIn PDF document text
- https://s3.amazonaws.com/zerejibixupav/free_literature_study_guides_for_high_school.pdfIn PDF document text
- https://s3.amazonaws.com/papuja/mexebomezuba.pdfIn PDF document text
- https://s3.amazonaws.com/nigimul/99246286623.pdfIn PDF document text
- https://s3.amazonaws.com/jalasilunaz/76724785724.pdfIn PDF document text
- https://s3.amazonaws.com/gurafoga/aines_dosis_y_presentacion.pdfIn PDF document text
- https://s3.amazonaws.com/fikuvine/timex_indiglo_watch_wr30m_instructions.pdfIn PDF document text
- https://s3.amazonaws.com/rodiligarexo/americold_ipo_prospectus.pdfIn PDF document text
- https://s3.amazonaws.com/mavixu/change_checkbox_style_android.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f18a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF18A	5560 bytes
SHA-256: `bd3534363b3c2a2ea3a7be2a6b94b2f575e8c9ee148dd22eacb119291b8ba4f0`
`font_01_sfnt_off00010493.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10493	11156 bytes
SHA-256: `5c34c335917f9744e94e508e99b6405c4ef7f69ddee23b5fa362bb1a1a5c3192`
`font_02_sfnt_off000129f6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x129F6	16576 bytes
SHA-256: `f3f271d3565b767b45133f04dd01b91dee0defe0fe6b72a4bc7e85c0f60502cd`

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