PDF malware analysis — malicious · b1737074355d0397

MALICIOUS

PDF

74.6 KB Created: 2021-03-20 00:11:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 979dd3971b71a2982ecd610ff5e5edd5 SHA-1: 6239d628132a476f266fd2da6124e5e4482389c4 SHA-256: b1737074355d0397bde99afd141dd3f309d2038b4e6c91d85bde8851c468e4b7

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The ML classifier and ClamAV detection strongly indicate maliciousness. The PDF contains an embedded URI pointing to a suspicious domain, which is a common tactic for phishing or distributing further malicious content. While no scripts were explicitly extracted, the presence of an external URI suggests an attempt to redirect the user to a malicious site.

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://xezojetit.ru/wix?keyword=jupiter+florida+fishing
- http://zdsshop.top/yamaha_fascino_imagesxlvw1.pdf
- http://thedouche.xyz/sopa_de_letras_para_nios_de_segundo_de_primaria_para_imprimir9efcg.pdf
- http://marketeuro.pro/amplificador_marshall_mg30cfx_precio3o8ig.pdf
- https://cdn-cms.f-static.net/uploads/4485578/normal_60192faf789c9.pdf
- https://cdn-cms.f-static.net/uploads/4426425/normal_602e551c13ca9.pdf
- http://inmyshtangen.xyz/35456926621oc2on.pdf
- https://cdn-cms.f-static.net/uploads/4415769/normal_601ff17369dd6.pdf
- https://cdn-cms.f-static.net/uploads/4463825/normal_6053912b83e2f.pdf
- https://cdn-cms.f-static.net/uploads/4423166/normal_6034fac12f530.pdf
- https://cdn-cms.f-static.net/uploads/4412415/normal_604496b621c35.pdf
- https://cdn.sqhk.co/sezogitov/hjqhdDB/funtime_freddy_sounds.pdf
- https://cdn-cms.f-static.net/uploads/4480403/normal_5fd177e81c925.pdf
- http://idealicacolumbia.site/pojogojyl6f2.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/kosamupim/basis_for_a_topology.pdf
- http://zuluvegutadetu.epizy.com/banting_postdoctoral_fellowship_application_guide.pdf
- https://s3.amazonaws.com/dufekifaral/vaxame.pdf
- https://s3.amazonaws.com/mixanaz/dinubedaminumixofozeb.pdf
- http://kepinud.rf.gd/10770823380.pdf
- https://s3.amazonaws.com/befarekogol/jazelelawifum.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_off0000e597.bin` `10f5d2e3acb41b7f1932f4bf6a88ddf1aff28287e5f614bcc6ca718e6e2d5ccf`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE597	5292 bytes
`font_01_sfnt_off0000f792.bin` `c0d4c93d4d7053ab7b3d85c0edbf8dc1cea1bc4fec7a7b90657d796fb3dd8304`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF792	11260 bytes

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