PDF malware analysis — malicious · 845532925e8eba7c

MALICIOUS

PDF

54.8 KB Created: 2020-10-28 08:45:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04

MD5: 14598b67755ce629ee843488c9a9cce3 SHA-1: 2ad1a926b269edee8799c5a16389405f9976f932 SHA-256: 845532925e8eba7c2effb2472e490509b8c7a0920befeae5019edb69e5eefed7

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

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

Machine Learning

Nyx PDF Classifier malicious score 0.9999

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://gettraff.ru/123?keyword=is+hinduism+monotheistic+polytheism In PDF document text
- https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/mujuvirogan.pdfIn PDF document text
- https://mamexobupelo.weebly.com/uploads/1/3/1/3/131383482/15c0f02d0255b3a.pdfIn PDF document text
- https://rajomiluti.weebly.com/uploads/1/3/2/6/132682989/5481668.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367650/normal_5f883fcbd1240.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368503/normal_5f8840fc273ac.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365612/normal_5f879f2b6fcbe.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4380858/normal_5f8d2ca0c85f7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367642/normal_5f8d802d2db0e.pdfIn PDF document text
- https://sijevunima.weebly.com/uploads/1/3/1/8/131859613/nagusemesa.pdfIn PDF document text
- https://bigogewoxof.weebly.com/uploads/1/3/0/7/130739615/555287.pdfIn PDF document text
- https://besiwalufeg.weebly.com/uploads/1/3/2/6/132696214/72d7dd03fbce46b.pdfIn PDF document text
- https://gikanirirexenad.weebly.com/uploads/1/3/0/7/130776133/zivofo_siratipen_xikutov.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/jiwisi/el_maquis_anarquista.pdfIn PDF document text
- https://s3.amazonaws.com/nagev/the_rule_of_st_benedict_book.pdfIn PDF document text
- https://s3.amazonaws.com/guvovigo/81290925895.pdfIn PDF document text
- https://s3.amazonaws.com/pajukovuxetu/canon_eos_t5i_manual.pdfIn PDF document text
- https://s3.amazonaws.com/bajapovogam/femoxovarelevuw.pdfIn PDF document text
- https://s3.amazonaws.com/lovetijif/corazones_rojos_libro.pdfIn PDF document text
- https://s3.amazonaws.com/tetazino/22391364903.pdfIn PDF document text
- https://s3.amazonaws.com/zuxadol/puwafozaxawowi.pdfIn PDF document text
- https://s3.amazonaws.com/paxivogedewilu/engranajes_de_tornillo_sin_fin.pdfIn PDF document text
- https://s3.amazonaws.com/badodemebo/acr_eular_sle_criteria_2018.pdfIn PDF document text
- https://s3.amazonaws.com/sivanira/cluster_sampling_notes.pdfIn PDF document text
- https://s3.amazonaws.com/rekorewexidiwo/nizofebuxejazevisunomuto.pdfIn PDF document text
- https://s3.amazonaws.com/xukonakefules/kajiputenajoxadupozosa.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_off00008b65.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8B65	2856 bytes
SHA-256: `4d00d9a42b8c0a6281c6f91ecd2d6619cfd6d2fee89e9d65d4cff6ecb559f56b`
`font_01_sfnt_off0000958f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x958F	5048 bytes
SHA-256: `0ca0caba4c507e18bb6c20c3d74a00c9a290e98a49a5a8c2f412bc4190971879`
`font_02_sfnt_off0000a694.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA694	12244 bytes
SHA-256: `a11da1c73311c6a7a6d381b7017872d07d2f2acafd308ce633efe1c92dc4056f`

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