PDF malware analysis — malicious · b1960c1b314039d2

MALICIOUS

PDF

84.6 KB Created: 2021-03-29 00:14:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: bba251bd1473da39753cac0c0aa0619a SHA-1: 6374b1fd14a6f931eff17fc8ed8f9308e23fcd95 SHA-256: b1960c1b314039d24570673f7d33023ce66e793676b58be27fb01da6f8680a2f

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many of which point to PDF files, suggesting a link farm or phishing attempt. The ML classifier and ClamAV detection strongly indicate maliciousness. The embedded URLs likely serve as lures to phishing or scam websites, potentially leading to further malware downloads or credential harvesting.

Machine Learning

Nyx PDF Classifier malicious score 0.9397

Heuristics 4

Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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
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/aws?utm_term=que+es+un+retrato+para+ni%25C3%25B1os
- https://static.s123-cdn-static.com/uploads/4470552/normal_5fc79bff2c5cb.pdf
- https://cdn-cms.f-static.net/uploads/4413226/normal_6050302ea8d2c.pdf
- https://cdn-cms.f-static.net/uploads/4416921/normal_601529bc9e629.pdf
- https://cdn-cms.f-static.net/uploads/4425511/normal_600e02fd1379d.pdf
- https://cdn-cms.f-static.net/uploads/4410030/normal_602d86e4cb560.pdf
- https://cdn-cms.f-static.net/uploads/4404133/normal_604f6e76dff79.pdf
- http://nokasosozigof.mypressonline.com/pagutegunezalagojime.pdf
- http://xusetelokumupoz.iblogger.org/multiple_intelligences_examples_in_the_classroom.pdf
- http://mitedujonajezed.scienceontheweb.net/whirlpool_quiet_wash_plus_dishwasher_troubleshooting.pdf
- https://cdn-cms.f-static.net/uploads/4405419/normal_603e452134a88.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://wifotomosif.epizy.com/local_guide_program.pdf
- https://d54d55f4-8004-4613-9f19-7b96cbed0ae7.filesusr.com/ugd/ce4b32_0195b9ce6de7478c83a9c0aeae8ef649.pdf?index=true
- http://suremosanox.rf.gd/edgenuity_algebra_1_semester_1_answers.pdf
- https://ded05c8b-f0d8-42bc-a64b-daa0b63394ca.filesusr.com/ugd/99afdc_5ecc62c0da794746aa3f30d47e54d378.pdf?index=true
- https://f238abdf-92e3-4651-90df-65b6e8a648d9.filesusr.com/ugd/99965f_e986762238704e8b9d1e20580fbe917d.pdf?index=true
- http://mopuminamopox.epizy.com/70075523293.pdf
- http://nojikigor.myartsonline.com/find_the_centroid_of_the_shaded_region_measurements_are_in_inches.pdf
- https://s3.amazonaws.com/buponuwebi/apologies_that_never_came_pierre_jeanty.pdf
- https://39c10a3a-92c6-412a-a1bb-b8a1fc48fbc4.filesusr.com/ugd/259099_1320e2ec51fe480ebe3fe2669886167e.pdf?index=true
- http://fufezexu.epizy.com/crack_ielts_reading.pdf
- https://s3.amazonaws.com/gazivemon/android_9_pie_features_samsung.pdf
- https://s3.amazonaws.com/nerugiraxura/casio_g-shock_ga-110gb-1a.pdf
- http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00013f1a.bin` `da32c60060bc1919fbfdd93f2adb767e22ad276e51cdef0e4359cdfa57408d89`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13F1A	5052 bytes

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