PDF malware analysis — malicious · 11b730ab53d6db5e

MALICIOUS

PDF

73.4 KB Created: 2021-06-05 21:43:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 5eab66cca2c84eb4074f24dcbdaaf3ad SHA-1: 500d8641b489d2772cf458181a43b84df45395f6 SHA-256: 11b730ab53d6db5eb86493cbe71a031efadbc8ce3476fadb8c9bffe0847061bc

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

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

Machine Learning

Nyx PDF Classifier malicious score 0.7190

Heuristics 4

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
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://wastran.ru/pbw?utm_term=driver+wifi+para+canaima+letras+rojas+ef10mi2 PDF link annotation
- https://kinojapi.weebly.com/uploads/1/3/2/3/132302846/1850212.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4452386/normal_6056bb76b6de2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4459477/normal_60b9f8384fcc7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4449766/normal_6047d9f5badaa.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370555/normal_5fd90e01d4dfa.pdfIn PDF document text
- https://jozisanolotodix.weebly.com/uploads/1/3/0/9/130969335/musanonexaliwiz-wugek-lumipej.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368246/normal_602056a486cb8.pdfIn PDF document text
- https://static.s123-cdn-static-d.com/uploads/4393033/normal_60b3ecc4764cc.pdfIn PDF document text
- https://nedisixikimu.weebly.com/uploads/1/3/7/5/137511189/zogamutipabifixufo.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4444874/normal_6063e030d6e26.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/e508c404-4490-4f8d-bb7f-4acecccadf1d/dakadujatoxaka.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/262e4747-59e1-45ee-8a78-947ce904874d/foxconn_n15235_motherboard_audio_drivers_for_windows_7.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b8b45975-d6cf-4c0b-9d97-2868df9a8ea4/fugoxolo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/74576b24-5f2c-4496-99d9-4c18fec0495d/warofarugilovipajiro.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/055f2650-9fd8-40fd-993c-a7b4e158fc37/wealthiest_nations_in_the_world_per_capita.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c7a36f84-fd9d-4348-8815-b5f0318eabaf/what_are_the_dramatic_techniques_in_literature.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8e1e922a-f621-4287-869e-a3779cfb9d18/lofezipufara.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/69fa9d54-94b5-47ef-93c2-8afe90b318bb/how_does_a_kill_a_watt_meter_work.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/fd001c2b-bd06-4df7-82e3-230aeccaff34/exerpeutic_900xl_extended_capacity_recumbent_bike_with_pulse_review.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d1b5ba5f-5f14-4c0f-a020-455301c4d48d/50256134438.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3599d33b-41e9-4870-a2d6-e7ceef7021da/59274898007.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_off0000e328.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE328	5716 bytes
SHA-256: `60387fa74b75934fdb11d1f32e4e2c5f8d55bf6e3c5d6177ef1077ccbc878ed0`
`font_01_sfnt_off0000f6b1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF6B1	10924 bytes
SHA-256: `2111d2300b8a7e55948404012f7d3f42eb252bbb54f69b91c9215baaab7c3afb`

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