PDF malware analysis — malicious · f7582f89045b0b40

MALICIOUS

PDF

76.7 KB Created: 2021-05-24 02:20:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27

MD5: 8182eed46728e1b8637f4811f94b5d6e SHA-1: 132084fa3f214be458fa3d66c4de463b3da6d1df SHA-256: f7582f89045b0b40faf84c9cbd46154b3842d813a4c65bbfeb61ae1d6382b2c7

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by multiple heuristics, including PDF_SEO_LINK_FARM and ML_NYX_PDF_MALICIOUS, indicating malicious intent. It contains numerous external links, with a primary focus on directing users to potentially malicious domains like jottigo.ru and weebly.com hosted PDFs. The presence of embedded URLs and the ClamAV detection as Pdf.Phishing.Trojan further support its classification as a phishing and potentially malicious document.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/strik?utm_term=nonton+film+indonesia+foxtrot+six PDF link annotation
- https://bukemabo.weebly.com/uploads/1/3/4/6/134653237/zamebepe.pdfIn PDF document text
- https://zelogevoge.weebly.com/uploads/1/3/1/4/131483318/97a133a5.pdfIn PDF document text
- https://mosevulex.weebly.com/uploads/1/3/4/8/134860143/xavezejizamuput-rikiwezemutal-potukuvaza-radederif.pdfIn PDF document text
- https://dobuxodujunov.weebly.com/uploads/1/3/2/7/132741154/6928607.pdfIn PDF document text
- https://gugagefa.weebly.com/uploads/1/3/4/3/134343265/7a7316544a.pdfIn PDF document text
- https://wopeduvolevim.weebly.com/uploads/1/3/0/7/130776212/dolajop.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/tibitexil/pirates_of_silicon_valley_movie_480p.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d93de573-deb6-4ca7-a5ff-84a7dd1bd9aa/what_makes_a_signature_valid.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/559d62a7-9459-43cf-a33a-7fface9abf32/minorufogutosiwam.pdfIn PDF document text
- https://s3.amazonaws.com/vipinib/critical_path_in_excel_template.pdfIn PDF document text
- https://s3.amazonaws.com/mijumomub/moxuruzirikafumutamamiviw.pdfIn PDF document text
- https://s3.amazonaws.com/nunakixuma/jeturiboradoselud.pdfIn PDF document text
- https://s3.amazonaws.com/memobofilenabon/toshiba_satellite_l755d-s5106_specs.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6a35af38-6dfb-4496-b7aa-1be484f3897b/govinda_namalu_in_telugu_download.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ca4d84af-25e0-4a6d-b8a5-eae854968c75/96744229257.pdfIn PDF document text
- https://s3.amazonaws.com/bopuxosavubare/sat_subject_chemistry_practice_test.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/36a9c740-ca5d-473e-9c96-7b7b55789094/gesovimuweterepuza.pdfIn PDF document text
- https://s3.amazonaws.com/somisilegex/sodekakusalo.pdfIn PDF document text
- https://s3.amazonaws.com/sepawi/ignou_assignment_front_page_format.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_off0000e150.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE150	4880 bytes
SHA-256: `e1f3e19101d17fdf145db18da8fd6917515372e8f48cc72f4294c6da965eacd1`
`font_01_sfnt_off0000f1ce.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF1CE	10564 bytes
SHA-256: `8fde6d11100a792ea1147d5dc45bf1274f09603fb55260676cdfddfed69f1c31`
`font_02_sfnt_off000115c5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x115C5	4324 bytes
SHA-256: `d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378`

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