PDF malware analysis — malicious · adb159bf7e4854a7

MALICIOUS

PDF

51.0 KB Created: 2020-10-28 03:34:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27

MD5: 125131bda57ac05ffec5c29b7686560d SHA-1: 820b8a1c53703a48a8e45b8dcfddd654f6a81ddf SHA-256: adb159bf7e4854a7a0d594e6c64112fb65124cbf43536b5f09dbc06334212ca4

194 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded URLs, one of which, 'https://gettraff.ru/123?keyword=freealts+fortnite+account', is flagged as a malicious redirector. The document body, though heavily obfuscated, appears to contain references to free accounts and the malicious URL, suggesting a lure. The presence of a password-protected archive lure heuristic indicates the document may be part of a multi-stage attack designed to bypass gateway scanning.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

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.
Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE

Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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=freealts+fortnite+account In PDF document text
- https://talapilodegopez.weebly.com/uploads/1/3/0/9/130969507/5733140.pdfIn PDF document text
- https://wiwanozamo.weebly.com/uploads/1/3/4/3/134306351/ffbc6469.pdfIn PDF document text
- https://wobafedufuj.weebly.com/uploads/1/3/4/0/134012960/pibiwumugiv.pdfIn PDF document text
- https://netaluzubik.weebly.com/uploads/1/3/0/8/130813777/3848154.pdfIn PDF document text
- https://wejibuxod.weebly.com/uploads/1/3/0/7/130740202/f0272.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4411511/normal_5f96ccb78a886.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4420917/normal_5f98be505d052.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4409000/normal_5f93f7bc86fa2.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/fosagobomap/tout_sur_les_energies_renouvelables.pdfIn PDF document text
- https://s3.amazonaws.com/buxoparadazegu/mass_spectrometer_principle.pdfIn PDF document text
- https://s3.amazonaws.com/nowokil/31375308825.pdfIn PDF document text
- https://s3.amazonaws.com/subud/rulabibixibudi.pdfIn PDF document text
- https://s3.amazonaws.com/dobesogum/bigomodudadojapiweno.pdfIn PDF document text
- https://s3.amazonaws.com/mijedusovineti/statistical_modeling_a_fresh_approach_download.pdfIn PDF document text
- https://s3.amazonaws.com/migivewuwe/kuxisesibivajixo.pdfIn PDF document text
- https://s3.amazonaws.com/fasanag/wuseladomarifapim.pdfIn PDF document text
- https://s3.amazonaws.com/zedilegol/fununabukeroburenarexeto.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/288015db-486a-4f23-8297-4f7e48020960/legendary_chests_conan_exiles.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/cc6d30e2-6bcc-429c-a3bf-4f8186d5da51/57867045639.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2e465cfb-9d95-451c-90ac-68453638cfb1/jabefub.pdfIn PDF document text
- https://s3.amazonaws.com/leguvefu/vixikifekipa.pdfIn PDF document text
- https://s3.amazonaws.com/jedaxopopuko/brunel_university_map.pdfIn PDF document text
- https://s3.amazonaws.com/mibiwivanetuj/regrouper_plusieurs_fichiers_en_un_seul.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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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
`stream_005_off000096e4.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x96E4	23396 bytes
SHA-256: `38edb0f246cc2f22eaa81eaf6f76db8dd12c214a88908826aeeb4cb5fcea7846`
`font_00_sfnt_off00006381.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6381	4832 bytes
SHA-256: `a36a47937e8cd0ecc380ee3f0764488f40bf5d383a8ce9046c7170812d795879`
`font_01_sfnt_off000073fa.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x73FA	10152 bytes
SHA-256: `fe19eb69c8ac1808225cd1f6b9666d26f87455121a75f0b4a3549e1786c7d21c`

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