PDF malware analysis — malicious · a8b4facb89d74367

MALICIOUS

PDF

76.4 KB Created: 2021-02-07 23:55:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22

MD5: 77be30358912b0d5e14404c7181a3a12 SHA-1: 388db9412395324aae2dfc2e3f61cde44ba1c35a SHA-256: a8b4facb89d7436774cca79153b5336d400443bbfc5c16abe0d75dc5019af8ad

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a domain that appears to be involved in phishing or malware distribution, disguised as an offer for free office software. The presence of multiple unknown URLs further supports the phishing pretext.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://leonvi.ru/aws?utm_term=free+office+software+for+windows+10 PDF link annotation
- https://cdn.sqhk.co/gukugifixija/gekhiig/dominos_discount_online_code.pdfIn PDF document text
- http://sodaapp.club/974958398712gamq.pdfIn PDF document text
- https://cdn.sqhk.co/vefuwebilux/jaujdYI/fikijoxawipozitib.pdfIn PDF document text
- http://gatorama.space/dononuruk7az9l.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4408002/normal_60015b06b2243.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4391015/normal_601fa792406fe.pdfIn PDF document text
- http://richmaya.site/fokisapite859.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/tutapaxi/26396386272.pdfIn PDF document text
- https://s3.amazonaws.com/tokit/dharma_kshetram_video_songs.pdfIn PDF document text
- https://s3.amazonaws.com/xeruxaxer/angamaly_diaries_bgm_free.pdfIn PDF document text
- http://dosidojabar.epizy.com/settlers_online_valiant_little_tailor_guide.pdfIn PDF document text
- https://s3.amazonaws.com/zugutixe/wobuwaxi.pdfIn PDF document text
- http://jufofokisib.epizy.com/34241066983.pdfIn PDF document text
- https://s3.amazonaws.com/retobifulipo/japupiramewefowev.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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000efc6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEFC6	5224 bytes
SHA-256: `a3eb1d84120be0e9d0cb7a9910c0efe22d980af3398fdd61d6e5459875074015`
`font_01_sfnt_off000101b5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x101B5	10212 bytes
SHA-256: `5488c14f5178f442e098e13c44795adc166c0913a0fecbe16414f8a062cec8c9`

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