PDF malware analysis — malicious · ad4d00195be75e1f

MALICIOUS

PDF

84.0 KB Created: 2021-05-27 16:44:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23

MD5: 1725eda4c43148fbe0e1d322fc86966b SHA-1: 201febbab6d4d4816fe62dfe3294f8f25df7fb76 SHA-256: ad4d00195be75e1f7daf0a7bc8cd0df3e8510696fdab8a244baec99da98c1637

222 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link farm and a redirector to a known malicious URL, indicating a phishing or malware distribution attempt. The presence of a 'download button' heuristic further supports the lure-based attack pattern. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest it is designed to redirect users to malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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://yafferge.ru/strik?utm_term=how+do+i+download+and+install+vidmate In PDF document text
- https://cdn-cms.f-static.net/uploads/4379473/normal_605c0ad949af6.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4422372/normal_5feb9feb5fb83.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4365570/normal_5fceab977047c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4453108/normal_6023ac5612d61.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4381105/normal_605dc47fdec40.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4496360/normal_5fca77cd5390b.pdfIn PDF document text
- https://jupavovol.weebly.com/uploads/1/3/4/3/134314217/3950734.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4405206/normal_6044fcf66ace1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4425217/normal_6069910752d1e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4490140/normal_606203a05c5db.pdfIn PDF document text
- https://jutemutugitut.weebly.com/uploads/1/3/4/6/134617260/silir_vodotalekelev_loxuf_sidabiz.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4459466/normal_60637b423a5e2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370737/normal_605947b85ef4d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4421468/normal_6069b7545336d.pdfIn PDF document text
- https://linugotozoluj.weebly.com/uploads/1/3/4/6/134662393/vizalepi.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4444882/normal_6014e74ba72a4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4527237/normal_601a54ba18803.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4486523/normal_605c77024133a.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4485579/normal_5ff0b91c2cc93.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://uploads.strikinglycdn.com/files/f87f0714-cdb3-4881-9fa8-b0908c5331e6/mobeluluzugos.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5259bf76-d5f3-42e2-91fb-31a3648adede/the_shining_ones_book_review.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_off0000fe32.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFE32	4776 bytes
SHA-256: `6b36caa1a56380d9a4b6baf24499c4a502b7129f3c250d4416bff150aa6365f9`
`font_01_sfnt_off00010e6a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10E6A	10656 bytes
SHA-256: `dc5a5ff614b8127ada1dbd698d043dfc092304608e27d9e84c7fee8e9f8fdee5`
`font_02_sfnt_off000132b4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x132B4	4324 bytes
SHA-256: `d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378`

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