PDF malware analysis — malicious · 8a5ed067d76112bb

MALICIOUS

PDF

84.3 KB Created: 2021-03-07 08:01:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22

MD5: bd9a74cabad542f31a938b13421a4c18 SHA-1: cc6000eca35a45464aacf75c6a580a3233e3acab SHA-256: 8a5ed067d76112bbc8e4bad2017a9b8ab373c0c6678f4e48fe769a5742bc4510

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded external links, with a critical heuristic identifying it as a 'PDF_SEO_LINK_FARM'. The primary malicious URLs identified are 'https://pelibifir.ru/wix?keyword=ftc+rover+ruckus+game+manual+part+1' and 'http://kitazixozakabu.sportsontheweb.net/33502899214.pdf'. These are likely used to redirect users to phishing or malware distribution sites. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9992

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 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
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://pelibifir.ru/wix?keyword=ftc+rover+ruckus+game+manual+part+1 PDF link annotation
- http://kitazixozakabu.sportsontheweb.net/33502899214.pdfIn PDF document text
- http://nigemutekilum.mypressonline.com/51957720988.pdfIn PDF document text
- https://cdn.sqhk.co/ledumixifer/Tr3RjaT/93049928891.pdfIn PDF document text
- https://cdn.sqhk.co/wagomito/c9idKic/75168349937.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://s3.amazonaws.com/pusori/in_christ_alone_sheet_music_free.pdfIn PDF document text
- https://b354d503-40d1-4c97-84b4-bc0b16c12f35.filesusr.com/ugd/8c7d07_3d9a19159f5c4ae0a1b7511916698705.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/bikikanafopavu/kamus_bahasa_jawa_kawi.pdfIn PDF document text
- https://00407fa8-a9ef-4b78-9bbe-46147fc8acf6.filesusr.com/ugd/5ecadc_0b73271be62545c48ed8d1674418ce8d.pdf?index=trueIn PDF document text
- https://6eed613e-cbae-405e-b458-9655ef9033f8.filesusr.com/ugd/e4f6f0_8b9229222a824533bce5d64bb82960d3.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/nilititonawafim/66161597741.pdfIn PDF document text
- https://0dc5016f-38c0-4e11-84f4-4717e3ef4ec7.filesusr.com/ugd/4fd84c_acaf0f4bc5b94ef9be004b1af93ec2fe.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/befarekogol/conformational_isomerism_in_ethane_ppt.pdfIn PDF document text
- http://rosajeku.myartsonline.com/89185750337.pdfIn PDF document text
- https://s3.amazonaws.com/nisiwanolom/xeraxov.pdfIn PDF document text
- https://bf68d742-fb98-404a-ab47-1dcf24f7df52.filesusr.com/ugd/83e7fd_77e451a7ebab41be95d11c0b6f2526c8.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/lijulijowivaze/rdr2_collector_s_strategy_guide.pdfIn PDF document text
- https://s3.amazonaws.com/mipizaju/ssc_chsl_2020_online_form_date.pdfIn PDF document text
- http://rodedewezijore.atwebpages.com/is_ableton_or_fl_studio_easier_to_use.pdfIn PDF document text
- https://s3.amazonaws.com/mekonulegipero/full_size_background_photos.pdfIn PDF document text
- https://024ce552-e2cc-4bd1-a5d9-b2c1fc696ba4.filesusr.com/ugd/b56239_66883750c5c14f8383922ddbda4cd48a.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/nowokil/reportagem_sobre_a_floresta_amaznica_2019.pdfIn PDF document text
- https://s3.amazonaws.com/lixasifasi/hartmann_group_annual_report.pdfIn PDF document text
- https://f1ddcea9-c323-452c-a4d3-aaefec61e50a.filesusr.com/ugd/defd8a_f399989a90ff42eb81729b5224b38243.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
- 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_off0000fd71.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFD71	5216 bytes
SHA-256: `df452873cfa21a29e691bf4895c2484fd7161c3ac949133706c0d297f0c01a6d`
`font_01_sfnt_off00010f2a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10F2A	11248 bytes
SHA-256: `0dc576de5c05655496f8913a086085b72f18b52d4d4d16e1bb2b4aa508041325`
`font_02_sfnt_off0001357e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1357E	4324 bytes
SHA-256: `0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333`

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