PDF malware analysis — malicious · c30ece9001f771a5

MALICIOUS

PDF

76.3 KB Created: 2021-03-11 09:46:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20

MD5: 5c16b5f41f38c2f06d7cfdaf7369391a SHA-1: a610ea9b792171625eeab007b363ab4b409fd069 SHA-256: c30ece9001f771a587887025b0971d7e4328ebda593415135a9ec1787a2cda8d

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with one pointing to 'botokaw.ru', suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, appears to be a lure related to educational materials, aligning with common social engineering tactics.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

Heuristics 5

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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://botokaw.ru/wix?keyword=workbook+for+diagnostic+medical+sonography+answers+chapter+15 PDF link annotation
- https://cdn.sqhk.co/vinasujitupe/9Bhgjho/7411_hillside_drive_la_jolla.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4464730/normal_5feffa2aa76af.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4426687/normal_6015935d62ac1.pdfIn PDF document text
- http://dalkomis.website/jimixipejorusovo539a3.pdfIn PDF document text
- https://somotudodij.weebly.com/uploads/1/3/4/6/134699902/6650947.pdfIn PDF document text
- https://cdn.sqhk.co/luwagoma/jcchiMY/91988116267.pdfIn PDF document text
- https://juxipidupe.weebly.com/uploads/1/3/4/6/134694928/185063.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4413705/normal_600ea1bc956d0.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4409604/normal_6008b700bcc1a.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4461249/normal_5ffff67929713.pdfIn PDF document text
- https://cdn.sqhk.co/zufuxirap/hhid6a6/number_of_free_kick_goals_ronaldo_vs_messi.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4402267/normal_600aabbe69df2.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4463560/normal_5fe4da5494bdb.pdfIn PDF document text
- http://kengoru.space/busqueda_por_voz_google_androidap0ot.pdfIn PDF document text
- https://pumutetigowon.weebly.com/uploads/1/3/4/6/134699291/22cd36b10f248e2.pdfIn PDF document text
- http://buyervannakupitvsem.xyz/food_stamps_interim_report_oregoni8vwh.pdfIn PDF document text
- https://cdn.sqhk.co/panajevem/gjlAy17/mopafomiwo.pdfIn PDF document text
- http://ridunculus.com/snap_on_1_2_digital_torque_wrench_atech3fr250bez51c.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://56db2a4d-09ce-4ff6-a558-abb1d6727cd4.filesusr.com/ugd/003b86_315bc5d986e146fc9e9d980d3b91aaed.pdf?index=trueIn PDF document text
- https://160e4e15-e27a-4ef2-9b26-f67fc0969a86.filesusr.com/ugd/cbdbb6_39899b19e6b244ab9f8c30c7dcf76cd8.pdf?index=trueIn 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
- https://savannah.gnu.org/projects/freefont/In PDF document text
- http://www.gnu.org/licenses/In PDF document text
- http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ca71.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCA71	6744 bytes
SHA-256: `127b44c9f93874c96d25eb7ddc4688780d8877ce931cf296363fb5748d8d514b`
`font_01_sfnt_off0000db58.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDB58	5944 bytes
SHA-256: `d614dfaf53fa3288cf372c1b474720c963d0c820fc2d6ce8614f36b926d23a12`
`font_02_sfnt_off0000ef8e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEF8E	10184 bytes
SHA-256: `a1bcaeaa1896924d35586c55312b14573c249962e13fa0b3eef3c3c6edc25eae`
`font_03_sfnt_off00011268.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11268	4324 bytes
SHA-256: `cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34`

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