PDF malware analysis — malicious · 6a51a029d83b3b46

MALICIOUS

PDF

45.6 KB Created: 2020-11-07 01:10:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26

MD5: 6b411ed43969d4504e89bd245d58480b SHA-1: 14e5dfaf11469ffbcc02e1aac26f9d8c14cb9282 SHA-256: 6a51a029d83b3b46fa7dc7a41b4453cb2a9113acd5f34faa7d75cfca7117af6d

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains embedded URLs, including one pointing to 'trafficel.ru', which is flagged as suspicious. The heuristic 'PDF_SEO_LINK_FARM' indicates the presence of numerous external links, suggesting an attempt to create a link farm or distribute malicious content. The ML classifier strongly flags this PDF as malicious, supporting the assessment of a malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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://trafficel.ru/aws?keyword=iran+country+fact+sheet+ap+comparative PDF link annotation
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/gedesisumi/vujitumeb.pdfIn PDF document text
- https://s3.amazonaws.com/sefiwegegagu/jesurikej.pdfIn PDF document text
- https://jawozegeru.files.wordpress.com/2020/11/sylvia_day_crossfire_series.pdfIn PDF document text
- https://s3.amazonaws.com/visagogijulep/dizozoxiki.pdfIn PDF document text
- https://s3.amazonaws.com/xipavir/carlos_drummond_de_andrade_amar_se_aprende_amando.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/99ff524a-83e2-4cdc-8dca-a8cb9bae87e6/24031905195.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ae541659-58e3-49ed-8034-d3f8f8c8d100/riwivotovajuk.pdfIn PDF document text
- https://s3.amazonaws.com/kavitokolezub/bisizuvumi.pdfIn PDF document text
- https://s3.amazonaws.com/jadere/astm_standards_for_tensile_testing_of_polymer_composites.pdfIn PDF document text
- https://s3.amazonaws.com/bededuxotulapil/retebikumiso.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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00007309.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7309	5324 bytes
SHA-256: `c961852252e893983e65ea74a9d75534c22924ff18650010092d14999e84b270`
`font_01_sfnt_off0000850c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x850C	10660 bytes
SHA-256: `cbbee959c09664ee4c0305fccaf21f746f364f8fb242ecc9d23c518dc3468c0a`

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