PDF malware analysis — malicious · 5696b8111f8aeb10

MALICIOUS

PDF

80.4 KB Created: 2021-03-21 09:37:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02

MD5: b3d12378dc1d7b633d8eca62cf4698d8 SHA-1: eb22d335a39210f93f214d4b08d3fa4f984cd5e0 SHA-256: 5696b8111f8aeb10c5fd758308a5f437ac12ceabbe0d9b62a1f5b7128fac8dc5

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, many of which are hosted on disposable domains or use URL shorteners, suggesting an attempt to redirect users to malicious content. The document body, though heavily obfuscated, contains text related to 'Wings of fire comic book series' and 'wkhtmltopdf', likely serving as a lure.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

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://zajinet.ru/strik?utm_term=wings+of+fire+comic+book+series PDF link annotation
- https://cdn.sqhk.co/xitilesuxiw/jbicLhd/xaxezanizoramidis.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4493916/normal_5fde2129891e3.pdfIn PDF document text
- http://gamuxiwami.getenjoyment.net/viwevo.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4530151/normal_60107398896bb.pdfIn PDF document text
- https://cdn.sqhk.co/xevezele/OCrjeif/application_format_in_gujarati_for_job.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4452400/normal_6015c937a4ae5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4375356/normal_60411a9cafe0b.pdfIn PDF document text
- https://cdn.sqhk.co/gotoruzud/jbjhWgj/acknowledgement_form_format.pdfIn PDF document text
- https://cdn.sqhk.co/mixubiki/6jeZghA/crude_oil_price_news_today_philippines.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4529977/normal_60302e77806c6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4461746/normal_604e4a7a62fc0.pdfIn PDF document text
- https://katopogovalasa.weebly.com/uploads/1/3/5/4/135401177/0c83d95ad03c9.pdfIn PDF document text
- http://xomutukegadoj.mypressonline.com/bcc_cable_catalog.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4370768/normal_6008137d89f5a.pdfIn PDF document text
- https://vixoketos.weebly.com/uploads/1/3/1/4/131453026/ac93e7d.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4472221/normal_5ff2ba08cd432.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370097/normal_605376ce714cf.pdfIn PDF document text
- https://vosuzujil.weebly.com/uploads/1/3/2/6/132681517/1743634.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
- http://rabelinowizufe.myartsonline.com/vocabulary_test.pdfIn PDF document text
- https://s3.amazonaws.com/napoledunadigo/app_cloner_apk_apkpure.pdfIn PDF document text
- https://s3.amazonaws.com/levovod/top_100_lawyers_in_new_jersey.pdfIn PDF document text
- https://s3.amazonaws.com/dikomavomem/nisovakexurubo.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_off0000f09a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF09A	4884 bytes
SHA-256: `0fb5663412fb65707921062d28be65adeb1751758fc175358a3c02852d4e0086`
`font_01_sfnt_off00010121.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10121	10852 bytes
SHA-256: `6a1b1da42bd594094cd74bfded0b6ebeb17bed81082bae4ab196f973c8f9ed05`
`font_02_sfnt_off0001260c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1260C	4324 bytes
SHA-256: `cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34`

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