Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6665f327d9d01c4…

MALICIOUS

PDF

70.6 KB Created: 2021-03-14 11:09:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f9d98d8acb84b5f678d5eca3405b30e7 SHA-1: ee2474a2c2072251922c9ef8294731efd9831edb SHA-256: d6665f327d9d01c4fa93ac56fe9a957d200290aafdae16aec4dbee8f3654b1fc
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, contains text related to a telescope price, suggesting a lure. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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/strik?utm_term=celestron+astromaster+70+telescope+price
    • http://naxiramomamaz.66ghz.com/manual_de_instrues_impressora_hp_laserjet_m1212nf_mfp.pdf
    • https://cdn-cms.f-static.net/uploads/4454684/normal_602367f91e52d.pdf
    • http://fofiwafajelerax.sportsontheweb.net/hp_scanjet_5590_price_in_bangladesh.pdf
    • https://cdn-cms.f-static.net/uploads/4445115/normal_600b73febafac.pdf
    • https://cdn-cms.f-static.net/uploads/4383922/normal_604bcb2df1b3f.pdf
    • http://mafewagidimu.22web.org/87638757724.pdf
    • https://static.s123-cdn-static.com/uploads/4380413/normal_5fc860d6c26c4.pdf
    • https://cdn-cms.f-static.net/uploads/4473919/normal_6012560d4af51.pdf
    • http://pobadabodoz.scienceontheweb.net/gomofeserubetubajesaben.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://runuvabono.rf.gd/vubudajavewenudaneto.pdf
    • https://uploads.strikinglycdn.com/files/c6d8c4f6-4064-4f0b-9289-0d4cec883eef/76502833714.pdf
    • https://uploads.strikinglycdn.com/files/dfff42f2-d771-4acd-82d0-9844ed8fa484/92646935209.pdf
    • http://jidolij.epizy.com/bozojuzemedo.pdf
    • https://uploads.strikinglycdn.com/files/44c27b55-b9d4-4dd0-be45-3558f617c8bf/41077964030.pdf
    • https://uploads.strikinglycdn.com/files/3397e0ee-0049-468f-b845-8e5cdfc237c6/mugoduve.pdf
    • http://doriponesarom.myartsonline.com/22114525499.pdf
    • https://uploads.strikinglycdn.com/files/6bfb2894-7413-456b-b7df-39199ba39729/1797000652.pdf
    • https://uploads.strikinglycdn.com/files/4c4254eb-db62-4761-a64f-fc457784d33d/81848355384.pdf
    • https://uploads.strikinglycdn.com/files/7ac088cf-37cc-4df3-8997-bbe23b3fdc6a/what_is_considered_a_good_psat_score.pdf
    • https://uploads.strikinglycdn.com/files/fbed8928-774d-493e-8004-d01c31cecfd2/objections_to_contention_interrogatories_california.pdf
    • https://uploads.strikinglycdn.com/files/cebf14a8-387d-470b-966c-28bdd69a0335/what_is_the_function_of_the_kernel_in_an_operating_system.pdf
    • https://uploads.strikinglycdn.com/files/c965f11b-8f9a-47cd-904f-f96ba3cfb0e1/kenmore_quiet_comfort_14_humidifier_manual.pdf
    • http://dijinisefiregot.rf.gd/zetirirase.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.

FilenameKindSourceSize
font_00_sfnt_off0000d476.bin
4a493f9220b440deb51d76f1022833366d4a9ddb5ff2f9f16782646ff957813c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD476 5208 bytes
font_01_sfnt_off0000e617.bin
03bb76b3c711d6126d034ac94ea5b05c5738cb3d39b1e23433978b69ae331f31		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE617 11148 bytes

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