PDF malware analysis — malicious · 7bf046d3599e2502

MALICIOUS

PDF

88.2 KB Created: 2021-03-21 00:58:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23

MD5: 6815a347e706f943fcdc5d6e384f43ef SHA-1: aa5198f870e01c2e5be2b3b1e00f904de26d2a28 SHA-256: 7bf046d3599e25028d21c73ede6054dd74ddee800d7262ed130dbd9dcb7c2d28

214 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, with one specifically identified as a malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the PDF structure itself facilitates malicious redirection.

Machine Learning

Nyx PDF Classifier malicious score 0.9989

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/award?keyword=deformation+of+the+crust+pdf In PDF document text
- https://malomunadososep.weebly.com/uploads/1/3/5/3/135351096/depevudo-nuponaw-bafuxiwepuziwo.pdfIn PDF document text
- https://cdn.sqhk.co/jifegusewe/hahihfO/flipkart_seller_number.pdfIn PDF document text
- https://cdn.sqhk.co/sewizefaxiki/geN2hhm/lego_marvel_super_heroes_2_deluxe_edition_review.pdfIn PDF document text
- https://cdn.sqhk.co/darekomeguv/ghhRjjv/castle_crashers_remastered_switch_review.pdfIn PDF document text
- https://bafijesepuj.weebly.com/uploads/1/3/4/0/134041147/revavedududopit.pdfIn PDF document text
- https://venubitolaxi.weebly.com/uploads/1/3/4/3/134372432/nejijimimej.pdfIn PDF document text
- https://muxojuwarerufi.weebly.com/uploads/1/3/5/3/135388895/4835971.pdfIn PDF document text
- http://jusukigib.sportsontheweb.net/wevumonovimedoxov.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/wejuvono/62608006364.pdfIn PDF document text
- https://s3.amazonaws.com/fotojipifuzitul/unicode_to_bijoy_converter_free.pdfIn PDF document text
- http://wilaroxu.atwebpages.com/cual_es_el_significado_de_la_palabra_guerra_de_guerrillas.pdfIn PDF document text
- https://s3.amazonaws.com/satedafadusizo/62956902940.pdfIn PDF document text
- https://s3.amazonaws.com/gazivemon/sex_education_3_trailer_2020.pdfIn PDF document text
- https://s3.amazonaws.com/mufukep/sama_basel_iii_guidelines.pdfIn PDF document text
- https://s3.amazonaws.com/lomuper/broken_vessels_piano.pdfIn PDF document text
- https://s3.amazonaws.com/tazibabebamep/tolejowexe.pdfIn PDF document text
- http://toxifiv.myartsonline.com/tilolalunadifijogiba.pdfIn PDF document text
- https://s3.amazonaws.com/tenunud/epidemiologia_basica_robert_beaglehole.pdfIn PDF document text
- https://s3.amazonaws.com/fowonaxul/noligamogegafudapatowatun.pdfIn PDF document text
- http://bolirazebaf.myartsonline.com/their_eyes_were_watching_god_audiobook_chapter_18.pdfIn PDF document text
- https://s3.amazonaws.com/nagudo/rafijudoro.pdfIn PDF document text
- https://s3.amazonaws.com/besafefaf/wozevid.pdfIn PDF document text
- https://s3.amazonaws.com/lodazojamuva/64722176771.pdfIn PDF document text
- https://s3.amazonaws.com/voxipanovigepiv/sandy_hook_victims_coroner_s_report.pdfIn PDF document text
- http://lebusepuwiri.atwebpages.com/fha_va_amendatory_clause.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_off000105f0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x105F0	5360 bytes
SHA-256: `4972dbc2f782dca618cf39db3c2c597dcc23089ad22d45d6323576f574f1ae6c`
`font_01_sfnt_off00011808.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11808	11236 bytes
SHA-256: `4ceebf8c5a44585318397e428ce8e1ae27dd107eadc9460e94ee2f5dfb7096f8`
`font_02_sfnt_off00013dd2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13DD2	16060 bytes
SHA-256: `99ddc6f5858eb134f8024171ebe717cbd02485c31471b921a5021903b5272953`

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