PDF malware analysis — malicious · f521d2705ff59a68

MALICIOUS

PDF

73.2 KB Created: 2021-04-09 03:07:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c2fa36f7907ce916796bc611b40b06e9 SHA-1: d6caa130a02ff1665158cbc9bb7418f2d78a7dd8 SHA-256: f521d2705ff59a687b596ec1a9e3a8e2975a2fbe87d14256c8c7f79fca212794

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains an embedded URL that appears to be part of a phishing or malware distribution scheme, disguised by seemingly innocuous search terms. The presence of embedded URLs and the overall detection strongly suggest this PDF is designed to redirect users to malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://midufefew.ru/strik?utm_term=troy+bilt+tiller+service+near+me
- http://tafugegajotu.mygamesonline.org/mitsubishi_mr_slim_inverter.pdf
- http://verifybadgehelp.com/breakfast_club_soundtrack16oac.pdf
- http://zutolewe.mywebcommunity.org/nvs_catering_assistant_book.pdf
- http://sosepojidoduxad.iblogger.org/wuforizupipuder.pdf
- http://junemam.22web.org/ankhiyon_ke_jharokhon_se_song_lyrics.pdf
- http://svarka-aurora.online/mary_rowlandson_captivity_narrative7l2j5.pdf
- http://wisakuxipo.22web.org/english_words_with_telugu_meaning.pdf
- http://gofidiva.iblogger.org/65624338773.pdf
- https://cdn.sqhk.co/zifiguwosu/XhjFl5q/wazuziwerepowok.pdf
- https://cdn.sqhk.co/gupimupiset/JhhGVha/65849848559.pdf
- http://pinenud.mygamesonline.org/bonjour_tristesse_free_download.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://widafasamuj.epizy.com/mikexitatumonorizevilozen.pdf
- http://wepiliga.epizy.com/curriculum_vitae_template_european_format.pdf
- http://milizirasidemib.epizy.com/63567228867.pdf
- http://jifulig.epizy.com/malformaciones_congenitas_causas.pdf
- http://wojibikifi.myartsonline.com/leather_knife_sheath_patterns.pdf
- http://kenesowozowojaw.myartsonline.com/lesev.pdf
- http://rujemivegelap.epizy.com/fuwulal.pdf
- http://topuwagib.epizy.com/business_process_outsourcing_project.pdf
- http://gedijusopekud.epizy.com/mawurafalen.pdf
- http://bozonesowozo.epizy.com/nubupafetifeg.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000de9b.bin` `52882c904a8fbb25993f63345ad1d6886b929c21c48f7805b97a9e5488a57476`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDE9B	5196 bytes
`font_01_sfnt_off0000f041.bin` `c596ed5653c9c5cdf62af54622945a9e1731c55533ce849ce41350aa4fc36f74`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF041	11424 bytes

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