PDF malware analysis — malicious · 5e96d0a8a6ece932

MALICIOUS

PDF

81.3 KB Created: 2021-03-14 04:25:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02

MD5: a4808d91aa1e49d0d17edcf29f05505a SHA-1: 2622f4cf25528532b42329315c01142f0dbcb513 SHA-256: 5e96d0a8a6ece9328ae864eda7609dce853881e22c9d0e4a5820372cfc7c481d

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains numerous embedded URLs pointing to disposable domains, indicating a link farm designed to redirect users to potentially harmful content. The presence of external URIs and the classification as a link farm suggest an attempt to distribute phishing lures or malware.

Machine Learning

Nyx PDF Classifier malicious score 0.9991

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://nipisod.ru/strik?utm_term=what+color+does+not+reflect+light PDF link annotation
- http://frasqen.online/ooma_hd2_handset_setupyv2n7.pdfIn PDF document text
- http://expo-kit.ru/how_to_fix_a_ps4_disc_reader9lxy6.pdfIn PDF document text
- https://gekuxufetog.weebly.com/uploads/1/3/1/3/131384115/sogigurowur.pdfIn PDF document text
- http://blog-millionaire.buzz/housing_allowance_claim_form989qz.pdfIn PDF document text
- http://siankaanmexico.com/thug_kitchen_hatch_chili_enchiladas9jv5n.pdfIn PDF document text
- http://tertov.xyz/how_much_does_it_cost_to_get_a_transmission_solenoid_replaced27qeq.pdfIn PDF document text
- http://grinallex.shop/cold_war_events_and_policies_chart_answers3me9c.pdfIn PDF document text
- http://raisinshq.pro/237410338478pkfg.pdfIn PDF document text
- http://redirunna.xyz/clash_royale_hack_ios_2019qcv5j.pdfIn PDF document text
- http://kyukty68.xyz/43090514424qz4jk.pdfIn PDF document text
- http://reform-st.ru/pakozos0u6z.pdfIn PDF document text
- https://sizosadul.weebly.com/uploads/1/3/3/9/133986432/felexoxa.pdfIn PDF document text
- http://openlait.pro/kugobiboqpj9e.pdfIn PDF document text
- http://natikolom.site/40500222213mcvt7.pdfIn PDF document text
- https://zalozudipob.weebly.com/uploads/1/3/4/6/134673455/155d0c2760.pdfIn PDF document text
- https://torovuzexas.weebly.com/uploads/1/3/2/7/132710592/rejegeg-gisigu-kakebewopopi-pubomiwipu.pdfIn PDF document text
- http://zespodsvetkoy.site/john_deere_mower_dealers_ukooz3o.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://c9254e9e-0e71-498a-8384-ab4c929b52b4.filesusr.com/ugd/0699ff_365f49bb224e43ec9422d49d79b5651f.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/6f4572e1-37eb-494d-95bd-80f5f409e805/does_fine_mean_ok.pdfIn PDF document text
- https://33c7e2ec-32fc-4676-a642-9d95a4379e01.filesusr.com/ugd/622218_2853f7c50d4b4482aa980f97bd83b4f6.pdf?index=trueIn PDF document text
- https://c3438639-6a75-4920-aa4f-d1e0b619354f.filesusr.com/ugd/3be3a7_ad887deb7e8a4fcfa39ca226a8f783ed.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/bff79371-7e60-4fac-8d40-6bc1942c70da/safomisirelifevuxakem.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/aa4b0c41-79c4-4bb9-b4dd-0c49df63d27e/kusegirobejodizutog.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_off0000f27f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF27F	5084 bytes
SHA-256: `1960035e6ac2f7dc5af81be411af8ee82207a5fe455de3782ac130a13b8ba8f1`
`font_01_sfnt_off000103c7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x103C7	10924 bytes
SHA-256: `b40ee0a351544b678beb5ab866e9213e29aafc82aa29f059fd00132a0d415683`
`font_02_sfnt_off00012943.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12943	4324 bytes
SHA-256: `05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176`

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