PDF malware analysis — malicious · cca5d5ac1e29432e

MALICIOUS

PDF

127.0 KB Created: 2021-03-20 00:07:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22

MD5: e37cc691163396a8c562c1d81e5b4e60 SHA-1: 07fc23296e59988fdac556aee35da8846ab741c4 SHA-256: cca5d5ac1e29432efa709b008acce23128b8e3d5f2410ea8ba319a60b5faef2b

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, with a primary suspicious URL identified as 'https://lozipotod.ru/123?utm_term=report+lekhan+kya+h'. Heuristics indicate this PDF is part of a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or trojan delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://lozipotod.ru/123?utm_term=report+lekhan+kya+h PDF link annotation
- https://cdn-cms.f-static.net/uploads/4403687/normal_5fd5f020687aa.pdfIn PDF document text
- https://cdn.sqhk.co/kozuvurop/iicBugf/clash_of_clans_war_tracker.pdfIn PDF document text
- http://a-trvl.ru/las_reformas_borbonicas_en_espaa_resumenenzby.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4366005/normal_6001c71612b4a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4484097/normal_6054e11e8df5d.pdfIn PDF document text
- http://study-english-05.site/94970128828mf4y1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4470211/normal_5fd0d6cab9f13.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366642/normal_6023037e1942a.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4488330/normal_6005bc983f09e.pdfIn PDF document text
- http://chambrehq.xyz/algebraic_fractions_worksheet3nsyi.pdfIn PDF document text
- http://copyrightsupporthelpcenter.com/82536555765a0e48.pdfIn PDF document text
- https://cdn.sqhk.co/wafizogep/Qhj1idL/mazajixuzajaz.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://fedorahosted.org/lohitIn PDF document text
- https://fb413987-6e77-4bf1-aaa6-e97eb550fbee.filesusr.com/ugd/108936_265189ababac4c67af7cd6aeaa00efa9.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/fevobelijogal/holistic_tarot_study_guide.pdfIn PDF document text
- https://0ca3454e-05ac-49fc-8d00-644b1af7be3c.filesusr.com/ugd/8bf3fc_11375aef9e8243df8913ae4ed0416348.pdf?index=trueIn PDF document text
- https://3a7b682b-4b85-4b21-836a-a34929c8735b.filesusr.com/ugd/0cd3a8_ab311571f57c4c8b99075c4b40fc0133.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/bolovopizonuki/dell_precision_t7400_price_in_india.pdfIn PDF document text
- https://0e627107-309b-4451-a84d-e7064c41fccd.filesusr.com/ugd/04c368_673c409501544125b426673a0f61df18.pdf?index=trueIn PDF document text
- https://5e9816b5-e261-4a84-a5c7-594b6999e1c8.filesusr.com/ugd/eb2f7d_049211c4fbba4683b377b26b8cb31007.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/gidibesuxi/wisesitiketifajor.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
- http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
- http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000170a7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x170A7	4900 bytes
SHA-256: `85e5221e18e47b964e0cc90c75031cf457015e19ab63fc0c0d400b7d4bdc1c1d`
`font_01_sfnt_off00018152.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x18152	3720 bytes
SHA-256: `d5ecec3e822993868ba70e247019bcdb656a9fee58d620eb93bc70658e929280`
`font_02_sfnt_off00018cb4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x18CB4	9676 bytes
SHA-256: `b5bac154242f64311540451cc598053a0e07a3fe97ddd6bc35195660c2e8730c`
`font_03_sfnt_off0001adc1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1ADC1	21632 bytes
SHA-256: `ce4e66594afd21d1ae68aed6824beddfb60f4ecdf8916cc7998d5149f06fd8f6`

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