Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f151f5e9e5926b5…

MALICIOUS

PDF

74.2 KB Created: 2021-03-01 00:55:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 432de14738f302185d522675de38caf1 SHA-1: 04bc09a3d31d92d984528002245a1bad538b9ff0 SHA-256: 2f151f5e9e5926b5156563a87c025e15da68201bf7da139239180f5c73743c21
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://crophysi.ru/123?utm_term=wendy%2527s+large+chili+nutrition+information In PDF document text
    • https://static.s123-cdn-static.com/uploads/4414868/normal_5fcdc96d9fb67.pdfIn PDF document text
    • https://tumuzisokume.weebly.com/uploads/1/3/5/3/135351536/1506540.pdfIn PDF document text
    • http://kodamup.22web.org/82941830126.pdfIn PDF document text
    • https://juzasofudabin.weebly.com/uploads/1/3/0/7/130775050/xomujeri.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494138/normal_5fe01ba130110.pdfIn PDF document text
    • https://jewajufigojoxi.weebly.com/uploads/1/3/1/4/131438211/balidetatasowefi.pdfIn PDF document text
    • https://sigojexubaj.weebly.com/uploads/1/3/2/6/132682800/zutinasewo.pdfIn PDF document text
    • http://bettermoneytips.com/10202085681vgh0p.pdfIn PDF document text
    • https://pirowefe.weebly.com/uploads/1/3/4/4/134444143/7148021.pdfIn PDF document text
    • https://doxugibako.weebly.com/uploads/1/3/0/7/130776338/joxowapapu-musekina.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/55711984746.pdfIn PDF document text
    • https://s3.amazonaws.com/sefukirexuwekij/leadership_styles_theory.pdfIn PDF document text
    • https://s3.amazonaws.com/zulezov/rajozute.pdfIn PDF document text
    • http://sujosoxajixojiz.epizy.com/how_often_should_you_do_strengthening_exercises.pdfIn PDF document text
    • http://nidedos.rf.gd/11440418428.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_off0000e41e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE41E 5584 bytes
SHA-256: 01447d03eea2142fc2c6cab17537c4b819e173fb8a842d1cc946bc1a558eb2c7
font_01_sfnt_off0000f70e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF70E 10892 bytes
SHA-256: 1047394e1086f844be3ab4684c28f45beeaa8efe15e0b08063523aacb0f797df