PDF malware analysis — malicious · ca41913262345fe5

MALICIOUS

PDF

52.1 KB Created: 2020-10-16 14:28:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22

MD5: 27f0945467726e462df25e6175ddb0b2 SHA-1: fd9f994e33080523a9c89833486c7d1f77013910 SHA-256: ca41913262345fe5ebe6df9729ccdeb3bbfab2543c8ef8a34fd8dc8b1494ba88

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous links, including one pointing to a known malicious redirector at 'ggtraff.ru'. The document body, though partially corrupted, includes the same lure text and URLs, suggesting a phishing or spam campaign. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs supports a malicious intent to redirect users to harmful content.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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.
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://ggtraff.ru/123?keyword=livre+de+francais+pour+debutant+pdf+gratuit In PDF document text
- https://cdn-cms.f-static.net/uploads/4365607/normal_5f874320bf22c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366010/normal_5f874e04222a6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374177/normal_5f8955790fa79.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365636/normal_5f86f9a0367b4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366000/normal_5f871af6dd755.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365608/normal_5f87231087fe2.pdfIn PDF document text
- https://vimiwegom.weebly.com/uploads/1/3/0/7/130775837/6087812.pdfIn PDF document text
- https://gusumadanu.weebly.com/uploads/1/3/2/6/132695601/539812.pdfIn PDF document text
- https://xetutinafo.weebly.com/uploads/1/3/0/7/130775845/5101609.pdfIn PDF document text
- https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/likanutavorolebonat.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/598226f7-5301-40bb-b53a-135cc984988e/posazij.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a619cd04-605d-488a-bef1-a47844b10331/zemivibojunijipepixelepi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f957140d-e00c-4010-b630-9dfea0bdc0d4/rapovipovovorotodo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0498/4156/9954/files/psychological_report_sample_for_student.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0481/4153/3347/files/bopapobamima.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0495/5226/1287/files/san_antonio_nm_burgers.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0484/2278/1086/files/bissell_lift_off_pet_deep_cleaner_manual.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/21078366-1cb6-4da2-a858-2b19759848e5/nudavolobevavamenekokan.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c6bdf476-8f9a-4630-bf06-49b8c4e19b62/mowagafozulotus.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0d8f3df0-31f2-4248-a6ad-966b42a542b2/gofibusojonejovejiwebev.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6b245dad-87ea-4afa-8481-615a27c385b0/gigomelipugu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/46eb9b3e-14a3-429b-89df-483c6c3fad90/gokenesovidumivuno.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00007359.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7359	5432 bytes
SHA-256: `9534d135276cff29c42658b39ae7befed08753c23d4651150a06f044ddc4cfa3`
`font_01_sfnt_off000085e0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x85E0	11740 bytes
SHA-256: `8ce3b264cb5d272c48b8fe7927c386bd6de9370f6a53015ca62a1969c7486d2f`
`font_02_sfnt_off0000ab14.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAB14	16204 bytes
SHA-256: `541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501`

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