PDF malware analysis — malicious · 6b6670a6f96d5d6c

MALICIOUS

PDF

79.1 KB Created: 2021-03-18 18:20:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13

MD5: 2ce09f4e2885cd71400c3efa4f33aca2 SHA-1: d6dd27aaa5feb4a471af5823745362b5da87af74 SHA-256: 6b6670a6f96d5d6cc9077f9e6cbab454d1f4fdd3a84f454352ca2fe7bf601b23

184 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics as malicious, including a critical finding for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded links, such as 'https://dafemum.ru/wix?keyword=friday+night+lights+best+speeches', are likely part of a phishing or malware distribution scheme. No scripts were extracted, but the PDF structure itself facilitates malicious redirection.

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
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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.
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://dafemum.ru/wix?keyword=friday+night+lights+best+speeches In PDF document text
- https://cdn.sqhk.co/xiladuxe/g57jjjg/hey_clay_animals_horse.pdfIn PDF document text
- http://antonioita.fun/infinite_jest_full_texto75lt.pdfIn PDF document text
- https://cdn.sqhk.co/vezukefuza/shfXNge/interstellar_2020_review.pdfIn PDF document text
- https://cdn.sqhk.co/tiruxugajo/RXebJzh/janifo.pdfIn PDF document text
- https://cdn.sqhk.co/gowozepugax/CigSwJh/lofaretajoxofawabuxo.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4464873/normal_60155f97bb4b4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4380072/normal_6047eb3f94a32.pdfIn PDF document text
- http://azalea.store/shankshaw_redemption_movieogqw6.pdfIn PDF document text
- http://differencecheats.net/viral_carcinogenesisgnneh.pdfIn PDF document text
- http://zathkatow.xyz/how_to_make_friends_and_influence_others_principles5m44x.pdfIn PDF document text
- https://cdn.sqhk.co/jukunobegabe/jc0jbji/cute_tumblr_yellow_wallpaper.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4481411/normal_5fca89adacd19.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4471474/normal_6008095df3144.pdfIn PDF document text
- https://cdn.sqhk.co/pexufenek/YbjgMie/boris_and_the_dark_survival_apk_android.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4489852/normal_60065cdfa1251.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/zebarufuridorur/brahma_kumaris_murli.pdfIn PDF document text
- https://s3.amazonaws.com/zodererezuzuxi/volume_of_a_cone_mathworksheets4kids.pdfIn PDF document text
- https://s3.amazonaws.com/didowugorokirug/jitafevefisifozal.pdfIn PDF document text
- https://s3.amazonaws.com/kuxegu/amar_chitra_katha_books_india.pdfIn PDF document text
- https://s3.amazonaws.com/wexukufedepim/fewusesi.pdfIn PDF document text
- https://s3.amazonaws.com/dalava/how_are_you_answers_in_english.pdfIn PDF document text
- https://s3.amazonaws.com/waxegatulo/hong_kong_1_piano_sheet.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_off0000e94c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE94C	5212 bytes
SHA-256: `629c59422913e10a27dd561ca369fe151295b8c00ee50c303ed91212e853a0fe`
`font_01_sfnt_off0000faf9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFAF9	10676 bytes
SHA-256: `de47598a133ddacb8b4590972fd8a7774c8164fe51ef22040b91a911cfa63feb`
`font_02_sfnt_off00011f3a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11F3A	4324 bytes
SHA-256: `a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f`

Open this report in the interactive analyzer, or submit your own file for analysis.