PDF malware analysis — malicious · 25c8f3e8d9c731ec

MALICIOUS

PDF

74.9 KB Created: 2021-02-28 08:34:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 2b61d8955fefd9dcaffabb38ae2545f8 SHA-1: 1552e5f00b76a47d7be23e0445e0c3e0da0cf9f7 SHA-256: 25c8f3e8d9c731ecd318cf29f34a0106ebf6e7307f8774154d129c2f9cd60f2d

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document that contains an embedded URL pointing to a malicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The document body, though heavily obfuscated, appears to be a lure related to the importance of the English language, directing the user to the suspicious URL.

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://jumiwimov.ru/aws?utm_term=why+the+english+language+is+becoming+so+important
- http://blu-ital.space/hurt_feelings_report_funnycib8r.pdf
- https://static.s123-cdn-static.com/uploads/4474446/normal_5fee6c88a0cc0.pdf
- http://opencabinets.xyz/feletadupikomaserofozoij18.pdf
- http://vaxiliwu.medianewsonline.com/tizesimusijabe.pdf
- http://1eyvgo.xyz/dominos_coupons_2020_februarym8cog.pdf
- https://cdn.sqhk.co/sativomofij/dhiv2qJ/call_of_mini_zombies_online.pdf
- https://cdn.sqhk.co/levowexesu/iiaichd/pixel_battleground_apk_mod.pdf
- http://pugisapi.mypressonline.com/why_isnt_my_rice_cooker_working.pdf
- http://vipimuxatomefi.medianewsonline.com/82449227952.pdf
- https://sazotavivi.weebly.com/uploads/1/3/1/1/131164406/50721223ce04c.pdf
- http://yogait.space/95850225045k2yl4.pdf
- https://mepopukivar.weebly.com/uploads/1/3/6/0/136083549/574625ad9.pdf
- https://cdn.sqhk.co/pufuxarabo/jfKLmlT/jumamunijasidamojogaw.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://ligoroxenafof.atwebpages.com/boterepesikaxojuduvu.pdf
- http://saxodanokijaj.atwebpages.com/13427082362.pdf
- https://s3.amazonaws.com/xukonakefules/angeles_y_demonios_dan_brown_libro.pdf
- https://s3.amazonaws.com/luropiw/cheap_linen_sheets_australia.pdf
- https://s3.amazonaws.com/xidazeze/candy_crush_saga_life_hack_android.pdf
- https://s3.amazonaws.com/mamibis/benakej.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_off0000e6f8.bin` `54bef84e169d6ff4a7e63c55b230a3f1c7479b89a1af5992ae54576c5543bedb`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE6F8	5600 bytes
`font_01_sfnt_off0000f9f0.bin` `b3823087c7be9658bd6166b606e03ce7bdcc7901dbe18d737b3eae409e2e60c3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF9F0	10564 bytes

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