Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc3a71edb28eb722…

MALICIOUS

PDF

40.5 KB Created: 2020-10-15 23:43:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: c6f36688a856d6430aa081785b43b513 SHA-1: df75fcc091d3258d35f9d8e63a78a3d8e982cbf2 SHA-256: cc3a71edb28eb7220266a6da929838f7f5e0c87c8f52cc7df41622fe5d2eb1ec
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://gettraff.ru/123?keyword=ancona+pyramid+30+range+hood+installation+manual In PDF document text
    • https://vuxilimibipemop.weebly.com/uploads/1/3/1/4/131453056/4171977.pdfIn PDF document text
    • https://nipaxibovaj.weebly.com/uploads/1/3/1/3/131379211/9240104.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/3936ca.pdfIn PDF document text
    • https://site-1038714.mozfiles.com/files/1038714/kabomomu.pdfIn PDF document text
    • https://site-1040387.mozfiles.com/files/1040387/resegamavobon.pdfIn PDF document text
    • https://site-1039400.mozfiles.com/files/1039400/16379758175.pdfIn PDF document text
    • https://site-1043353.mozfiles.com/files/1043353/kuposazakuzomat.pdfIn PDF document text
    • https://site-1036881.mozfiles.com/files/1036881/gisugaririgexevijela.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5eb23fa1-4699-4605-a7bc-1384794d89ab/tekorokuge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/241c127a-e8e5-4ca2-b63f-830fd7d8fd59/58111788879.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/687ab6da-b2bf-4164-8b78-620509c01d27/39090431209.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d624ed80-4b37-416e-82b6-dd29736c097e/47565682908.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3381/1351/files/47279634541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7128/4135/files/sachs_obituary_springfield_mo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8334/9668/files/mivowazonizokew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3c78a1e-863b-41df-ab91-73eaa7f37bcb/punujixuwuxanutegeras.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17ed6aeb-4b6e-401c-8b19-65f313020848/pidopotanas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/066230f9-4328-4b75-95a4-a30145f3efab/30867868177.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ee43d56-eb9f-45e6-b9bc-fba489d189af/tupov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7a3acd7-6323-4d09-8945-1b98917d35c0/16590913693.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eac884a6-6b96-4167-9569-ec3958a16c03/tefiworonuwa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c7207ca-f11d-46c4-a10e-5502f9de9c7c/85321209010.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e4cb7f7-721a-4d82-9799-88a9b2fc3519/75328866670.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_off0000567c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x567C 5884 bytes
SHA-256: ea614ae9c40b0e3ec0c314caf594ff96f25fe187f5684affd5f9e0441f2fba23
font_01_sfnt_off00006a4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A4C 13364 bytes
SHA-256: 936115c9e8ccc1a98f0ae0a73707e41f067a5f0c6a36fa1893374ff6563c8ea1