PDF malware analysis — malicious · c1cf91230bdb8efe

MALICIOUS

PDF

81.1 KB Created: 2021-04-04 22:03:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 52f70d700639524ebf2c06886c46def1 SHA-1: 53979d0255c83ea50b7f7361f5bbe1e1e4e6ef2d SHA-256: c1cf91230bdb8efec489f4bd023253c02af4c8dc77e2ef27f5c1b295931b0368

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojanized PDF. The embedded URL `https://nipisod.ru/123?utm_term=future+tense+worksheet+for+grade+4+pdf` suggests a lure related to educational content. While no scripts were explicitly extracted, the PDF structure and heuristic firings point towards a malicious intent to trick users into downloading further malicious content.

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://nipisod.ru/123?utm_term=future+tense+worksheet+for+grade+4+pdf
- https://cdn.sqhk.co/baxafapunubi/pyjbigX/canon_eos_7d_utility_mac.pdf
- https://cdn.sqhk.co/doboketuzoj/3xvhcAI/pufedufeduzixonivoze.pdf
- https://cdn.sqhk.co/tojofelekob/hbjh765/oceanhorn_2_switch_gameplay.pdf
- https://cdn.sqhk.co/peluxisomex/B15ibgc/26222518739.pdf
- https://cdn-cms.f-static.net/uploads/4387424/normal_601bdff701d54.pdf
- https://static.s123-cdn-static.com/uploads/4417032/normal_5ffdab8dbb70a.pdf
- http://jevafurevozu.mygamesonline.org/42855336399.pdf
- https://cdn-cms.f-static.net/uploads/4367004/normal_604d17b12c2b6.pdf
- https://cdn.sqhk.co/dekavaka/i3rie0R/nepekugofopuniwiju.pdf
- https://cdn.sqhk.co/femokuxajuz/dMCjiW8/15087388945.pdf
- https://static.s123-cdn-static.com/uploads/4459058/normal_5ffb31d02dfd5.pdf
- http://lurubalopare.sportsontheweb.net/73440007438.pdf
- https://static.s123-cdn-static.com/uploads/4373983/normal_5ff8b7229826c.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/remavuj/google_form_create.pdf
- https://s3.amazonaws.com/xupovobejanam/15738052561.pdf
- https://s3.amazonaws.com/nuxulikiwab/bolton_le_sands_school_uniform.pdf
- https://s3.amazonaws.com/watajive/21084707561.pdf
- https://s3.amazonaws.com/gomaxod/attendance_system_free.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_off0000fec8.bin` `84134f2de8ca0386571a769f7dfbe0e5359c5e9ac6f64043519d25a1b0664016`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFEC8	5468 bytes
`font_01_sfnt_off0001117c.bin` `0ccab44f19b20c4da2f89d7d9ce462403e579f8e1709c02847ae1300ef714bee`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1117C	11348 bytes

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