PDF malware analysis — malicious · 1b6fbc760d07eb1e

MALICIOUS

PDF

75.3 KB Created: 2021-03-15 19:22:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25

MD5: 1107ad9f1a2ef3228e3872cd8031ac1e SHA-1: d4902381e09c93d15dd8145840d9b2e7132cdb7e SHA-256: 1b6fbc760d07eb1ec6f00f1fe780e51d2683ecfd94618c4d8541abfcceee8d78

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains numerous embedded URLs, with at least one pointing to a domain associated with link farming and disposable hosting, suggesting a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to be a lure related to song chords, aiming to trick users into visiting these malicious links.

Machine Learning

Nyx PDF Classifier malicious score 0.9991

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://lozipotod.ru/award?keyword=thinking+out+loud+chords+piano+pdf PDF link annotation
- https://cdn.sqhk.co/vamunidibu/hghbNOf/65499646608.pdfIn PDF document text
- https://cdn.sqhk.co/xegunorasu/gdgfAFF/12453093959.pdfIn PDF document text
- http://puzexijabin.mypressonline.com/kindergarten_vocabulary_words.pdfIn PDF document text
- http://reweder.site/goruvafinemif7erq.pdfIn PDF document text
- https://cdn.sqhk.co/jibezilesu/gcjfjcL/98523384163.pdfIn PDF document text
- http://rivalo130.com/what_are_the_major_sources_of_co2vtq5z.pdfIn PDF document text
- https://cdn.sqhk.co/petebeki/uhcBjcB/80819159252.pdfIn PDF document text
- https://cdn.sqhk.co/bakavaxa/RVq30IV/programa_vida_saludable_sep_2020.pdfIn PDF document text
- http://gekifek.scienceontheweb.net/le_corbusier_five_points_of_architecture.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://d78d2789-9aef-4bfd-88be-9093bec910ef.filesusr.com/ugd/87a178_ce67ec4af4d64058b388a544ebc53f0e.pdf?index=trueIn PDF document text
- https://f6180879-d31b-499c-8e42-fead7842c491.filesusr.com/ugd/007227_4346980e499f40b99b90ea297034b028.pdf?index=trueIn PDF document text
- http://wajetidal.epizy.com/48005948323.pdfIn PDF document text
- https://s3.amazonaws.com/ruzumeb/66303129723.pdfIn PDF document text
- https://e4da1597-3bb3-488b-9226-7c2c9e06e9ce.filesusr.com/ugd/db5d73_ae0e1c9711d94b6e91bc888eec1022d9.pdf?index=trueIn PDF document text
- http://foxorefo.epizy.com/inscription_formation_agregation_interne_eps_creteil.pdfIn PDF document text
- https://s3.amazonaws.com/tokatefozude/59247702637.pdfIn PDF document text
- https://s3.amazonaws.com/nalifij/32412306942.pdfIn PDF document text
- https://f3c4034a-4a94-4c47-b6c5-0445626d7bf8.filesusr.com/ugd/655f09_21a83cce1a984216a599fcc42f33a34c.pdf?index=trueIn PDF document text
- http://kevakop.epizy.com/fundamental_accounting_principles_20th_edition_free.pdfIn PDF document text
- http://zajukefed.epizy.com/bollywood_song_dj_video.pdfIn PDF document text
- http://nazowovemozugiv.myartsonline.com/jadigog.pdfIn PDF document text
- https://ce2645ba-e89a-43d5-afff-5c0150757291.filesusr.com/ugd/c63dba_de0833844b654d9e83c1228c0f45e856.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/muwomapotumugi/76478936968.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_off0000dfcb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDFCB	5428 bytes
SHA-256: `e57f28229980d52e682f0616f76e2189ad4dfe034898c63af9d094d6e46a8f5d`
`font_01_sfnt_off0000f23c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF23C	1800 bytes
SHA-256: `daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e`
`font_02_sfnt_off0000faca.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFACA	10772 bytes
SHA-256: `5a99ebb0ca9b2081cc7f71ddb8b28e238bc34e78584b059669b4700788bc0967`

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