Malicious PDF — malware analysis report

Static analysis result for SHA-256 802aacaadf51b807…

MALICIOUS

PDF

73.2 KB Created: 2021-01-01 19:09:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 23c1246eb7a170a1fb2306ce16ab1062 SHA-1: b3414491aea631b249e9ab8e4b3275f7cf8fa88c SHA-256: 802aacaadf51b807ff476c8b4154c4e77f116df05a39366affe47df4f6f914b1
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a technique often used in link farm attacks to manipulate search engine rankings or to redirect users to malicious sites. The document body, though heavily obfuscated, contains text related to 'The Lion King 2019' and mentions 'wkhtmltopdf', suggesting a lure to entice clicks. The presence of PDF_SEO_LINK_FARM and PDF_URI heuristics, along with multiple unknown reputation URLs, strongly indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://trafficel.ru/123?utm_term=watch+the+lion+king+2019+free+online+now PDF link annotation
    • https://guzepebizosi.weebly.com/uploads/1/3/4/8/134880367/5836824.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374957/normal_5fa4651383dd0.pdfIn PDF document text
    • https://tudegikugil.weebly.com/uploads/1/3/5/3/135317618/fbafa7d2f2b.pdfIn PDF document text
    • https://cdn.sqhk.co/lenawemijixe/geijohb/82449757424.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/fdab8a7e-929e-41fd-8a58-d7789efb79c3/fegototofugukun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/665f186a-579d-4847-9c55-58c4c0d688b0/anatomy_and_physiology_an_integrativ.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a1805e3-4444-490d-b838-7f9a1442a536/xusefoxono.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13ad6d8a-7201-4844-81df-eba9c791816d/pamatoxajetiwosig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/900c0d9e-ae7c-4cff-adf6-443fc9db65a4/islamic_center_of_cleveland_history.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4887ad39-b659-4dc4-a042-6e0504a01e13/dog_poop_removal_reno.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2436021a-bea7-4a9e-b003-83e892cb71cf/visualizing_nutrition_4th_edition_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/614da655-0b0b-4bbe-9fd9-dfcd1741d19c/macbeth_literature_guide_2011_secondary_solutions.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d291.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD291 5404 bytes
SHA-256: ea75837fd005fc6a8274156be57631916e1fec6ad10838b934d5d6a057f12be6
font_01_sfnt_off0000e504.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE504 10704 bytes
SHA-256: 1ce1bedba5a72f40bf909da953b311301515516065c264700b627aeb60a18fcf
font_02_sfnt_off00010978.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10978 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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