Malicious PDF — malware analysis report

Static analysis result for SHA-256 86e1a69c4103368a…

MALICIOUS

PDF

47.9 KB Created: 2020-10-15 04:12:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d496290ffb8c46e08a4a4f864bac6a22 SHA-1: f6e5f1e254749293e3f65f8c6a5931a135637624 SHA-256: 86e1a69c4103368a2afe8608676b2271de25932dc3e80f8d4510ac0a131602d9
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ggtraff.ru/123?keyword=double+integrals+in+polar+coordinates+examples+pdf In PDF document text
    • https://tipefejiri.weebly.com/uploads/1/3/0/9/130969755/sofiwibipul.pdfIn PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/luzisovilisav.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/xereromejiv-koxozirusoror-moxonujis.pdfIn PDF document text
    • https://wonigebegi.weebly.com/uploads/1/3/1/6/131606731/zuxupabupi.pdfIn PDF document text
    • https://texitanoz.weebly.com/uploads/1/3/0/7/130739996/tojajixubunigerus.pdfIn PDF document text
    • https://site-1043802.mozfiles.com/files/1043802/87985425709.pdfIn PDF document text
    • https://site-1042276.mozfiles.com/files/1042276/84992394112.pdfIn PDF document text
    • https://site-1042196.mozfiles.com/files/1042196/83982446922.pdfIn PDF document text
    • https://site-1044503.mozfiles.com/files/1044503/60006699146.pdfIn PDF document text
    • https://site-1043165.mozfiles.com/files/1043165/guzuzetudukifajojom.pdfIn PDF document text
    • https://site-1039428.mozfiles.com/files/1039428/cats_claw_creeper.pdfIn PDF document text
    • https://site-1040558.mozfiles.com/files/1040558/bizoxanodu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7719/7221/files/nc_5th_grade_math_eog_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9371/1261/files/vinuvufonadapafivu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2028/7639/files/angle_bisectors_of_a_triangle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/2577/1929/files/python_gtk_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9538/7048/files/70840620378.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14c996ea-d4b9-4677-83f0-2ce4063b4ae0/455850219.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98367cef-5509-4853-a41e-4a2e982cb759/13423550224.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e68a573-4885-44eb-928f-0eaa7911cdd8/8727481927.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4894d39f-1436-4502-9c55-2d1c858975d5/vigitekareji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ccca7442-666d-4c46-9aea-f5f06c4d7030/4599758490.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_off00007332.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7332 5684 bytes
SHA-256: 78bd90ff10a7ed00f835daf6dc045e670265b8081e76bfcbd251768c7cde3262
font_01_sfnt_off00008671.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8671 13996 bytes
SHA-256: 22e93765d3ae937a96ad72ca305ceb6850f3500c9c5d8dc9eaba0888efe47fa5

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