PDF malware analysis — malicious · 7ae80c5aed754aea

MALICIOUS

PDF

77.1 KB Created: 2021-05-30 18:59:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 83850a512962cb39de8a9a2a637106f0 SHA-1: 763c1c6796825bace5b4afe47c80a16c8dd3a438 SHA-256: 7ae80c5aed754aeab52fdb20ae6379b93833cf9f973df86a997fc6eaaafea190

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9749

Heuristics 6

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.
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
External URI info PDF_URI

PDF contains an external URL action
PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED

The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
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://golowaki.ru/strik?utm_term=sketchup+pro+2020+crack+free+download+full+version PDF link annotation
- https://sizegetode.weebly.com/uploads/1/3/4/3/134309939/vovurev.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4381291/normal_6023d6ed599d8.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4527164/normal_5fca90a80b716.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370280/normal_60397411e7a88.pdfIn PDF document text
- https://wotipufa.weebly.com/uploads/1/3/1/0/131069738/7807590.pdfIn PDF document text
- https://gizajosusu.weebly.com/uploads/1/3/1/8/131856374/fesoder.pdfIn PDF document text
- https://latitidazus.weebly.com/uploads/1/3/4/0/134018806/1170360.pdfIn PDF document text
- https://meverofukibax.weebly.com/uploads/1/3/4/6/134620555/garem.pdfIn PDF document text
- https://bazojarazete.weebly.com/uploads/1/3/4/6/134650598/51a73f235db.pdfIn PDF document text
- https://nuvosukive.weebly.com/uploads/1/3/4/7/134718285/renotu_jodaxakotorub_topolubejelufen_tozit.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4446512/normal_60603f05604ac.pdfIn PDF document text
- https://lapefobok.weebly.com/uploads/1/3/4/6/134663543/ruditatevisomafaxej.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4497095/normal_5fda3547873c4.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/9defd7ed-8c9e-4cc0-8c51-8f2e1e06aa63/percy_jackson_3_full_movie_download_in_hindi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2f59d864-2ff6-4c1d-94d9-0db60a312936/xejuxofepezagitonavazisi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9ba86451-22cf-43f2-b4ba-3982e783e86c/online_dd_groups_for_beginners_2020.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/33703238-03cf-4223-a4e5-72dd4a0003c0/53207469470.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/74dd5ee1-b3fc-4070-805d-89f81e932978/how_to_write_a_visual_analysis_essay.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9d270610-af8f-437f-9c55-4d624dcc8795/94822526874.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d3df33be-b866-419b-9ca2-b61ff3c4b027/ridatiwulix.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8cd4bcb7-74f8-4bb2-a86d-04d915220077/82890901735.pdfIn PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f6cf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF6CF	5836 bytes
SHA-256: `393364e79a04077cb342e835ca75c5a88b7348f4997c5b11ccbefbaae7eb70ab`
`font_01_sfnt_off00010ac5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10AC5	11256 bytes
SHA-256: `5d78935170c20b1851f1732e9d1bc9c543355a42cbea0cb1ff24bbb2c678e26d`

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