Malicious PDF — malware analysis report

Static analysis result for SHA-256 eacfbf034f4a1497…

MALICIOUS

PDF

65.2 KB Created: 2020-12-14 22:00:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 388d8505ef3eb75d3aa6bf253a51515d SHA-1: c4aad657a49acbdf18353696d2ed6ef5e43ee175 SHA-256: eacfbf034f4a1497dbfde4e27a744f24e15b7017cc8737eb2a5213ca08359f10
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by a machine learning classifier and ClamAV, with a high risk score. It contains an embedded URL pointing to 'traffnew.ru', which is suspicious. The document body, though heavily obfuscated, contains references to 'Center parcs sherwood map pdf' and authoring information suggesting it's a crafted PDF, likely intended to deceive the user into clicking the malicious link.

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://traffnew.ru/aws?utm_term=center+parcs+sherwood+map+pdf PDF link annotation
    • https://nulokoset.weebly.com/uploads/1/3/4/4/134447361/zigejikapobi.pdfIn PDF document text
    • https://dafalozurevibi.weebly.com/uploads/1/3/4/3/134308304/gabep.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390383/normal_5fc62eaf2fee4.pdfIn PDF document text
    • https://kosigejobawazi.weebly.com/uploads/1/3/4/3/134315380/webovulisuguget.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc0e552ec917750a3d7e003/t/5fc15118cb3e0f5771807736/1606504729073/samsung_galaxy_s4_manual_verizon.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/82790018601.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0787094f-7375-40b7-a0c9-c77d5907a197/51052392006.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fcc627b-eaa7-45ad-a38e-aa890aa0fb68/pipunuvorufofujabogasuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc443190-08c5-4c01-85bc-1b6915fa7d5a/10828032032.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc07dde27a199023ab34438/t/5fc3eef3173fb5383b1cdacc/1606676211675/pifimoxesazojofeworu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f7218d0-ba86-4ca2-a782-c636df64bbaa/the_origins_and_history_of_consciousness_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b359219e-6710-4fb4-83c1-6c29c3b8329d/a_pocket_naturalist_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kefefetafij/online_marksheet_ssc_part_1_2019.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6692c60f2895dc10d8c09/t/5fc69e544f98375720c80ea3/1606852180966/gmod_games_needed.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bf0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF0A 5360 bytes
SHA-256: d11e7fe4a6e098eccbd997339adb32e1bee3ba969265aae2b2761a56cf9f8de4
font_01_sfnt_off0000d127.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD127 11720 bytes
SHA-256: 3c63714fde4c83c4b7ccad9bd1c72e925bae3f5554043c587dc6732bb2c7c68a

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