PDF malware analysis — malicious · 30df2bbccdae8d1f

MALICIOUS

PDF

76.6 KB Created: 2021-03-26 14:07:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24

MD5: b6d9171a3b091b055911a16048b2a59d SHA-1: eb55039a12a3256aadf3b424d992393805d6347e SHA-256: 30df2bbccdae8d1f461eb0f972b3a11347f00b52ea24a48da7a7c59a7a85b7dc

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many of which are hosted on suspicious domains, indicating a link farm or phishing lure. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a phishing attack, likely initiated via spearphishing attachment.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

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://dugedepap.ru/123?utm_term=chhama+tiwari+stage+dance+video PDF link annotation
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://fedorahosted.org/lohitIn PDF document text
- https://s3.amazonaws.com/voxipanovigepiv/54257865886.pdfIn PDF document text
- https://s3.amazonaws.com/perurulexi/japogozexurikemulaxun.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0ace7b81-4c1a-439b-bf49-49d2eabfea70/37163084600.pdfIn PDF document text
- https://s3.amazonaws.com/wesezuzuvalirik/53637336575.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f642237d-cd8e-4ee5-b699-a72628e62096/quantitative_versus_qualitative_research_in_nursing.pdfIn PDF document text
- https://s3.amazonaws.com/pilazi/kyle_landry_inochi_no_namae_sheet_music.pdfIn PDF document text
- https://s3.amazonaws.com/jagux/pawubojoded.pdfIn PDF document text
- https://0fe83ef2-ed6b-4f04-a52d-31fe3c58d8d1.filesusr.com/ugd/ade4e6_b6f83d61f96c46d5bac24523fbf6f03f.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/bd91403e-5804-47e8-9d8c-890166ed195d/43128635036.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/aa07664d-8da9-4253-9f48-ad227f7d0716/pride_and_prejudice_book_review.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/03e4780f-907b-47fa-a2d8-917ed71c342d/70791016885.pdfIn PDF document text
- https://s3.amazonaws.com/lodazojamuva/bodavirubeluv.pdfIn PDF document text
- https://s3.amazonaws.com/sefepugolupalax/57640900280.pdfIn PDF document text
- https://s3.amazonaws.com/febopa/crossfit_workout_routine.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/850b803c-946c-4b22-b080-f0f2940aa730/wofogadoxomimubibedemej.pdfIn PDF document text
- https://s3.amazonaws.com/jamuluvuvava/tascam_dr_40x_sd_card.pdfIn PDF document text
- https://s3.amazonaws.com/sagotomagin/63126037925.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/de95746d-16f9-4e3e-8577-5819341ba7e6/metric_conversion_worksheet_with_answers.pdfIn PDF document text
- https://s3.amazonaws.com/xovekolamoxe/sample_service_invoice_template_word.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9eb7875a-40c4-4ba4-b9e6-d1a53feeac63/dolodifitategijog.pdfIn PDF document text
- https://52468903-0e2d-47c5-babb-61e1d305d291.filesusr.com/ugd/32777b_52f11c20055d45bc9af984da4c4e4aae.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/xutomoxu/20870950775.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_off0000d275.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD275	5376 bytes
SHA-256: `ce4de6f42bf861b7fdde54f8a3857f866f13aa23e1cb89ce816e63bbb90ef786`
`font_01_sfnt_off0000e4a4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE4A4	9584 bytes
SHA-256: `3ca0f4604d6c2819e64b08c8a66bcf6a91d3bed0e5505248f38a44f75e9e6cf6`
`font_02_sfnt_off000105a4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x105A4	9704 bytes
SHA-256: `91c3f91eccb885b5cffd0ea72fcde8a89edeb9ac69cac426d8545e3f4f0a4618`

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