PDF malware analysis — malicious · aae7b43fa96cbe55

MALICIOUS

PDF

84.5 KB Created: 2021-03-29 06:24:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07

MD5: 2114c69d428877dc096c1a5b21a3b637 SHA-1: 15312927652dd6d6445f698a04d8341750d4ebfe SHA-256: aae7b43fa96cbe55b7d1eb2b2685d6528ef8e979eda4a8718f418fbe3b961c63

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, with a critical heuristic identifying a link farm pointing to 30 other PDFs. The primary URL, 'https://golowaki.ru/aws?utm_term=power+pressure+cooker+xl+replacement+parts', suggests a lure related to product parts to entice users. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution via these linked resources.

Machine Learning

Nyx PDF Classifier malicious score 0.9950

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://golowaki.ru/aws?utm_term=power+pressure+cooker+xl+replacement+parts PDF link annotation
- https://dorubirema.weebly.com/uploads/1/3/4/3/134317311/pewegifotidugenujaru.pdfIn PDF document text
- https://lusovajilabijix.weebly.com/uploads/1/3/5/3/135351537/supusiwekigupofo.pdfIn PDF document text
- https://lirebuzufosol.weebly.com/uploads/1/3/1/4/131453665/gawizinune.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4470977/normal_5fd9ab7a7d5bf.pdfIn PDF document text
- https://cdn.sqhk.co/wifukatar/f4ha6jc/age_of_conquest_4_mod_apk_revdl.pdfIn PDF document text
- https://silujufadusume.weebly.com/uploads/1/3/1/1/131164496/motivuvako.pdfIn PDF document text
- https://vofesoxofibebup.weebly.com/uploads/1/3/4/9/134900141/422647.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369524/normal_601af95cd070c.pdfIn PDF document text
- https://cdn.sqhk.co/pugijuzo/iNiivgg/natelojilafa.pdfIn PDF document text
- https://bigasena.weebly.com/uploads/1/3/4/7/134725946/tolurenojixij.pdfIn PDF document text
- https://disadoxamegipu.weebly.com/uploads/1/3/4/5/134527150/pilinivamu-ravejogisuni-vatavirexo-fiwomatuvewomu.pdfIn PDF document text
- https://jutawalafomas.weebly.com/uploads/1/3/4/3/134316275/suwinesesedowus.pdfIn PDF document text
- https://jenodaxadow.weebly.com/uploads/1/3/4/0/134012655/9644706.pdfIn PDF document text
- https://josojizaxa.weebly.com/uploads/1/3/5/9/135966587/266d244c.pdfIn PDF document text
- https://cdn.sqhk.co/wugeguxu/gAKaD4D/68220574315.pdfIn PDF document text
- https://cdn.sqhk.co/kitujesijak/LAhfbIp/earth_live_wallpaper_pro_apk.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4421630/normal_60350867dd978.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/purawuma/avaya_one-x_agent_call_forwarding.pdfIn PDF document text
- https://s3.amazonaws.com/guxosa/64403662713.pdfIn PDF document text
- https://s3.amazonaws.com/kewuxejikiwe/lanafaxokeredivemunog.pdfIn PDF document text
- https://s3.amazonaws.com/wajibile/cuantos_litros_caben_en_un_metro_cubico.pdfIn PDF document text
- https://s3.amazonaws.com/xapidajovaji/spotify_premium_apk_iphone_7.pdfIn PDF document text
- https://s3.amazonaws.com/jubiferekaka/31925740573.pdfIn PDF document text
- https://s3.amazonaws.com/tomamujuf/21564475436.pdfIn PDF document text
- https://s3.amazonaws.com/likadojivivofu/57388511733.pdfIn PDF document text
- https://s3.amazonaws.com/mibiwivanetuj/java_basic_concepts_for_interview.pdfIn PDF document text
- https://s3.amazonaws.com/wotodedaruzuk/55561045493.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_off0000ff0a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFF0A	5140 bytes
SHA-256: `6e510118cb4b42ddf6bc0f3e49d9b0425ace7eaf14c6d968d6595490a12f7cf6`
`font_01_sfnt_off00011080.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11080	10948 bytes
SHA-256: `0ceaf90ed21cb1de8e7e2fd22cdb78df2c2b7b0dc21d60eb3225fbb199b36d64`
`font_02_sfnt_off0001357b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1357B	4324 bytes
SHA-256: `ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230`

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