PDF malware analysis — malicious · 274df607102a134a

MALICIOUS

PDF

79.7 KB Created: 2020-12-21 18:48:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24

MD5: 18f63b061e135d52518e326547834b9b SHA-1: 23122969f65fb698aac8116ec410c6d371d574e0 SHA-256: 274df607102a134a036e7f3ea8a94ca409bb85d354760a5fe9ef1ceb0ffedb34

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, with a critical heuristic identifying it as a link farm designed to direct users to other PDFs. One of the primary external URIs, 'https://traffset.ru/strik?utm_term=live+phish+releases+ranked', suggests a phishing or malicious content lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 0.9402

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
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://traffset.ru/strik?utm_term=live+phish+releases+ranked PDF link annotation
- https://xesapidad.weebly.com/uploads/1/3/4/3/134346602/zedarejoda.pdfIn PDF document text
- https://nokesopupikes.weebly.com/uploads/1/3/4/7/134767934/kigireseg_wexawoxubele_pojukaboj_zupugig.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/jexijer/vazulagemi.pdfIn PDF document text
- https://static1.squarespace.com/static/5fc65c44d49dd1244759b117/t/5fd04bfefc93c51d16da73b6/1607486463020/nimorivafogujesawuvike.pdfIn PDF document text
- https://s3.amazonaws.com/julaxel/2.2_properties_of_water_answers.pdfIn PDF document text
- https://s3.amazonaws.com/juzowilipi/fekafajagotafomanuwuzu.pdfIn PDF document text
- https://static1.squarespace.com/static/5fde7bc2425c6404843c03bf/t/5fded4b4f23a830a59b53d70/1608438965613/vetosegakanomad.pdfIn PDF document text
- https://s3.amazonaws.com/nevowimo/94789943151.pdfIn PDF document text
- https://s3.amazonaws.com/dojonuta/mentoring_minds_reading_answer_key_level_4.pdfIn PDF document text
- https://s3.amazonaws.com/vonusirukete/bejeweled_3_online_free_game.pdfIn PDF document text
- https://s3.amazonaws.com/wutisigila/71597876561.pdfIn PDF document text
- https://s3.amazonaws.com/pajeriramal/anchor_tag_excel_file.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_off00010426.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10426	5112 bytes
SHA-256: `e1ba2a46b939c6c1e076fe182f1f125c2a9453919623ce192de702c96864b8ac`
`font_01_sfnt_off00011586.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11586	11208 bytes
SHA-256: `5610d1551ff54d2fe396f33da82773487cf01e484b26df90a696077a7d6b0bda`

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